Home Updated 2025-01-10 +Created 1970-01-01
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Check out: OurBigBook.com, the best way to publish your scientific knowledge. It's an open source note taking system that can publish from lightweight markup files in your computer both to a multi-user mind melding dynamic website, or as a static website. It's like Wikipedia + GitHub + Stack Overflow + Obsidian mashed up. Source code: github.com/ourbigbook/ourbigbook.
Sponsor me to work on this project: 100k USD = I quit me job and work on it one year full time. Status: ~144k / 200k USD reached: 1st year locked-in, 2nd year stretch goal open at 200k USD. 1M USD = I retire and do it forever. How to donate: Section "Sponsor Ciro Santilli's work on OurBigBook.com".
I reached 100k USD after a 1000 Monero donation, so I quit my job for 1 year starting 1st June 2024 to solve as many STEM courses as I can from a world leading university to try and kickstart The Higher Education Revolution. If I reach 200k USD, then I'll do it for two years instead. A second year greatly improve chances of success: year one I solve a bunch of courses, year two I come guns blazing with the content and expand further.
Mission: to live in a world where you can learn university-level mathematics, physics, chemistry, biology and engineering from perfect free open source books that anyone can write to get famous. More rationale: Section "OurBigBook.com"
Explaining things is my superpower, e.g. I was top user #39 on Stack Overflow in 2023[ref][ref] and I have a few 1k+ star educational GitHub repositories[ref][ref][ref][ref]. Now I want to bring that level of awesomeness to masters level Mathematics and Physics. But I can't do it alone! So I created OurBigBook.com to allow everyone to work together towards the perfect book of everything.
My life's goal is to bring hardcore university-level STEM open educational content to all ages. Sponsor me at github.com/sponsors/cirosantilli starting from 1$/month so I can work full time on it. Further information: Section "Sponsor Ciro Santilli's work on OurBigBook.com". Achieving what I call "free gifted education" is my Nirvana.
This website is written in OurBigBook Markup, and it is published on both cirosantilli.com (static website) and outbigbook.om/cirosantilli (multi-user OurBigBook Web instance). Its source code is located at: github.com/cirosantilli/cirosantilli.github.io and also at cirosantilli.com/_dir and it is licensed under CC BY-SA 4.0 unless otherwise noted.
To contact Ciro, see: Section "How to contact Ciro Santilli". He likes to talk with random people of the Internet.
https://raw.githubusercontent.com/cirosantilli/media/master/ID_photo_of_Ciro_Santilli_taken_in_2013.jpg https://raw.githubusercontent.com/cirosantilli/media/master/Ciro_Santilli's_learn_teach_apply_logo.png
Besides that, I'm also a freedom of speech slacktivist and recreational cyclist. I like Chinese traditional music and classic Brazilian pop. Opinions are my own, but they could be yours too. Tax the rich.
I offer:
My approach is to:
For minors, parents are welcome to join video calls, and all interactions with the student will be recorded and made available to parents.
I have a proven track of explaining complex concepts in an interesting and useful way. I work for the learner. Teaching statement at: Section "How to teach". Pricing to be discussed. Contact details at: Section "How to contact Ciro Santilli".
I am particularly excited about pointing people to the potential next big things, my top picks these days are:
I am also generally interested in:
Figure 1.
Ciro Santilli's amazing Stack Overflow profile
. Ciro contributes almost exclusively by answering question he Googles into out of his own need, and never by refreshing the newest question of big tags for low hanging fruit! More information at: Section "Ciro Santilli's Stack Overflow contributions".
Figure 2.
Ciro Santilli's Stack Overflow stats
. home
Video 1.
Introduction to the OurBigBook Project
. Source.
Video 2.
OurBigBook Web topics demo
. Source. The OurBigBook topic feature allows users to "merge their minds" in a "sort by upvote"-stack overflow-like manner for each subject. This is the killer feature of OurBigBook Web. More information at: docs.ourbigbook.com/ourbigbook-web-topics.
Video 3.
OurBigBook dynamic article tree demo
. Source. The OurBigBook dynamic tree feature allows any of your headers to be the toplevel h1 header of a page, while still displaying its descendants. SEO loves this, and it also allows users to always get their content on the correct granularity. More information at: docs.ourbigbook.com/ourbigbook-web-dynamic-article-tree.
Video 4.
OurBigBook local editing and publishing demo
. Source. With OurBigBook you can store your content as plaintext files in a Lightweight markup, and then publish that to either OurBigBook.com to get awesome multi-user features, or as a static website where you are in full control. More information at: docs.ourbigbook.com/publish-your-content.
Video 5.
Top Down 2D continuous game with Urho3D C++ SDL and Box2D for Reinforcement learning by Ciro Santilli (2018)
Source. More information: Section "Ciro's 2D reinforcement learning games". This is Ciro's underwhelming stab at the fundamental question: Can AGI be trained in simulations?. This project could be taken much further.
Video 6.
Water Margin tribute to Chinese dissidents by Ciro Santilli (2022)
Source. Part of Ciro Santilli's campaign for freedom of speech in China, see also: cirosantilli.com/china-dictatorship/water-margin.
Figure 3.
Lenovo ThinkPad T430 running a BIOS hello world
. Source code: github.com/cirosantilli/x86-bare-metal-examples. Ciro's Linux Kernel Module Cheat is a closely related and much more important project that covers the Linux kernel and assembly language.
Video 7.
My Bitcoin inscription museum by Ciro Santilli
. Source. Introductory video to Section "Cool data embedded in the Bitcoin blockchain".
 -------------------------------------
|  Force of Will               3 U U  |
|  ---------------------------------  |
| |                  ////////////   | |
| |                ////() ()\////\  | |
| |               ///_\ (--) \///\  | |
| |        )      ////  \_____///\\ | |
| |       ) \      /   /   /    /   | |
| |    ) /   \     |   |  /   _/    | |
| |   ) \  (  (   /   / /   / \     | |
| |  / ) ( )  / (    )/(    )  \    | |
| |  \(_)/(_)/  /UUUU \  \\\/   |   | |
| .---------------------------------. |
| Interrupt                           |
| ,---------------------------------, |
| | You may pay 1 life and remove a | |
| | blue card in your hand from the | |
| | game instead of paying Force of | |
| | Will's casting cost.  Effects   | |
| | that prevent or redirect damage | |
| | cannot be used to counter this  | |
| | loss of life.                   | |
| | Counter target spell.           | |
| `---------------------------------` |
|                                     l
| Illus.  Terese Nelsen               |
 -------------------------------------
Code 1.
ASCII art of a Force of Will Magic: The Gathering card inscribed in the Bitcoin blockchain
.
Artist unknown, uploaded December 2014. Part of Section "Cool data embedded in the Bitcoin blockchain" where Ciro Santilli maintains a curated list of such interesting inscriptions.
This was a small project done by Ciro for artistic purposes that received some attention due to the incredible hype surrounding cryptocurrencies at the time. Ciro Santilli's views on cryptocurrencies are summarized at: Section "Are cryptocurrencies useful?".
Figure 4.
YellowRobot.jpg
. Source.
JPG image fully embedded in the Bitcoin blockchain depicting some kind of cut material art depicting a yellow robot, inscribed on January 29, 2017.
Ciro Santilli found this image and others during his research for Section "Cool data embedded in the Bitcoin blockchain" by searching for image fingerprints on every transaction payload of the blockchain with a script.
The image was uploaded by EMBII, co-creator of the AtomSea & EMBII upload mechanism, which was responsible for a large part of the image inscriptions in the Bitcoin blockchain.
The associated message reads:
Chiharu [EMBII's Japanese wife] and I found this little yellow robot while exploring Chicago. It will be covered by tar or eventually removed but this tribute will remain. N 41.880778 E -87.629210
This is one of Ciro Santilli's favorite AtomSea & EMBII uploads, as it perfectly encapsules the "medium as an art form" approach to blockchain art, where even non-novel works can be recontextualized into something interesting, here depicting an opposition between the ephemeral and the immutable.
At twitter.com/EMBII4U/status/1615389973343268871 EMBII announced that he would be giving off shares of that image on Sup!?, a Bitcoin-backed NFT system he was; making. In December 2023, he gave some shares of the robot to Ciro Santilli.
Figure 5.
2010 Wayback Machine archive of starwarsweb.net
.
This website was used as one of the CIA 2010 covert communication websites, a covert system the CIA used to communicate with its assets. More details at: Section "CIA 2010 covert communication websites".
Ciro Santilli had some naughty OSINT fun finding some of the websites of this defunct network in 2023 after he heard about the 2022 Reuters report on the matter, which for the first time gave away 7 concrete websites out of a claimed 885 total found. As of November 2023, Ciro had found about 350 of them.
Figure 6.
2010 Wayback Machine archive of noticiasmusica.net
.
This is another website that was used as one of the CIA 2010 covert communication websites. This website is written in Brazilian Portuguese, and therefore suggests that the CIA had assets in Brazil at the time, and thus was spying on a "fellow democracy".
Although Snowden's revelations made it extremely obvious to the world that the USA spies upon everyone outside of the Five Eyes, including fellow democracies, it is rare to have such a direct a concrete proof of it visible live right on the Wayback Machine. Other targeted democracies include France, Germany, Italy and Spain. More details at: USA spying on its own allies.
Video 8.
How I found a Star Wars website made by the CIA by Ciro Santilli
. Source. Slightly edited VOD of the talk Aratu Week 2024 Talk by Ciro Santilli: My Best Random Projects about the CIA 2010 covert communication websites.
Figure 7.
Diagram of the fundamental theorem on homomorphisms by Ciro Santilli (2020)
Shows the relationship between group homomorphisms and normal subgroups.
Figure 8.
Spacetime diagram illustrating how faster-than-light travel implies time travel by Ciro Santilli (2021)
Used in the Stack Exchange ansewr to Does faster than light travel imply travelling back in time?. One of Section "The best articles by Ciro Santilli".
Figure 9.
Average insertion time into heaps, binary search tree and hash maps of the C++ standard library by Ciro Santilli (2015)
Source. Used in the Stack Overflow answer to Heap vs Binary Search Tree (BST). One of Section "The best articles by Ciro Santilli".
Video 9.
Birch and Swinnerton-Dyer conjecture in two minutes by Ciro Santilli
. Source. Quick and direct explanation of the statement of the BSD conjecture for people who know basic university mathematics. This is one of the Millennium Prize Problems, and you will get a million dollars if you can solve it! This therefore falls in the Simple to state but hard to prove of Ciro Santilli's the beauty of mathematics aesthetics.
Figure 10.
Top view of an open Oxford Nanopore MinION
. Source. This is Ciro Santilli's hand on the Wikipedia article: en.wikipedia.org/wiki/Oxford_Nanopore_Technologies. He put it there after working a bit on Section "How to use an Oxford Nanopore MinION to extract DNA from river water and determine which bacteria live in it" :-) And he would love to document more experiments like that one Section "Videos of all key physics experiments", but opportunities are extremely rare.
A quick 2D continuous AI game prototype for reinforcement learning written in Matter.js, you can view it on a separate page at cirosantilli.com/_raw/js/matterjs/examples.html#top-down-asdw-fixed-viewport. This is a for-fun-only prototype for Ciro's 2D reinforcement learning games, C++ or maybe Python (for the deep learning ecosystem) seems inevitable for a serious version of such a project. But it is cute how much you can do with a few lines of Matter.js!
HTML snippet:
<iframe src="_raw/js/matterjs/examples.html#top-down-asdw-fixed-viewport" width="1000" height="850"></iframe>
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Accounts controlled by Ciro Santilli Updated 2025-01-10 +Created 1970-01-01
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Ciro Santilli controls the following accounts.
With non-trivial activity:
Trivial activity only:
Profiles without URLs (OMG...):
  • Discord: username cirosantilli, previously cirosantilli#8921
Accounts in Chinese websites. These accounts might be banned or altered or offer other limitations, so Ciro only communicates briefly through them. All communication through those channels should obviously be assumed to be compromised:
Accounts in Russian websites:
Dead websites:
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The best articles by Ciro Santilli Updated 2025-01-10 +Created 1970-01-01
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These are the best articles ever authored by Ciro Santilli, most of them in the format of Stack Overflow answers.
Ciro posts update about new articles on his Twitter accounts.
A chronological list of all articles is also kept at: Section "Updates".
Some random generally less technical in-tree essays will be present at: Section "Essays by Ciro Santilli".
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ASCII porn Updated 2025-01-10 +Created 1970-01-01
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Collections and overviews:
You just couldn't resist Googling it and clicking this page, could you? You naughty, naughty bearded programmer nerd. Yes, I'm talking to you.
TODO it is quite hard to actually find non-automatically generated ASCII art of people fucking, most of them are just sexy/horny women drawn by bearded nerds, likely and based on sticky physical paper porn magazines from the 80's, good old days.
                                    |
                                    |
   Tank Man                         |
   by Ciro Santilli          00     |
   2021 CC-BY-SA 4.0          \\  +-|-+
                               \\/   /|-+o
                                \\--+ / /o
                               /|\\ |/ /oo
                        |     / ----- /oo
                        |    /       /oo
                        |   +-------+oo
                        |   oo+---+ooo
                 00     |   oo     oo
                  \\  +-|-+
                   \\/   /|-+o
                    \\--+ / /o
                   /|\\ |/ /oo
            |     / ----- /oo
            |    /       /oo
            |   +-------+oo
            |   oo+---+ooo
     00     |   oo     oo
      \\  +-|-+
       \\/   /|-+o
        \\--+ / /o
       /|\\ |/ /oo
      / ----- /oo
     /       /oo
    +-------+oo
    oo+---+ooo
    oo     oo
 xx
 --
/||\
|--|
o||0
 ||
 /\
Code 1.
Tank man ASCII art by Ciro Santilli (2021)
This image depicts the Chinese government fucking 1 million Chinese people in the ass during the Tiananmen Square Protests, which was undoubtedly one of the largest gang bangs of the late 20th century:
Video 1.
The IBM 1401 mainframe runs "Edith" by CuriousMarc
. Source. 1960's punched card ASCII porn. Vintage. EDITH is also mentioned e.g. at: www.threedee.com/jcm/aaa/index.html. No ASCII uploads found however: www.reddit.com/r/programming/comments/a2pser/the_ibm_1401_mainframe_runs_edith/.
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Censorship Updated 2025-01-10 +Created 1970-01-01
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The opposite of freedom of speech.
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China Updated 2025-01-10 +Created 1970-01-01
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The most awesome country in the world, except for it's horrible government as of 2019 which Ciro Santilli is trying to replace with democracy.
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CIA 2010 covert communication websites Updated 2025-01-10 +Created 1970-01-01
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This article is about covert agent communication channel websites used by the CIA in many countries from the late 2000s until the early 2010s, when they were uncovered by counter intelligence of the targeted countries circa 2011-2013. This discovery led to the imprisonment and execution of several assets in Iran and China, and subsequent shutdown of the channel.
https://raw.githubusercontent.com/cirosantilli/media/master/CIA_Star_Wars_website_promo.jpg
Video 1.
How I found a Star Wars website made by the CIA by Ciro Santilli
. Source. Slightly edited VOD of the talk Aratu Week 2024 Talk by Ciro Santilli: My Best Random Projects.
The existence of such websites was first reported in November 2018 by Yahoo News: www.yahoo.com/video/cias-communications-suffered-catastrophic-compromise-started-iran-090018710.html.
Previous whispers had been heard in 2017 but without clear mention of websites: www.nytimes.com/2017/05/20/world/asia/china-cia-spies-espionage.html:
Some were convinced that a mole within the C.I.A. had betrayed the United States. Others believed that the Chinese had hacked the covert system the C.I.A. used to communicate with its foreign sources. Years later, that debate remains unresolved.
[...]
From the final weeks of 2010 through the end of 2012, [...] the Chinese killed at least a dozen of the C.I.A.’s sources. [...] One was shot in front of his colleagues in the courtyard of a government building — a message to others who might have been working for the C.I.A.
https://raw.githubusercontent.com/cirosantilli/media/master/Yahoo_CIA_website_article.png
Then in September 2022 a few specific websites were finally reported by Reuters: www.reuters.com/investigates/special-report/usa-spies-iran/, henceforth known only as "the Reuters article" in this article.
Figure 1.
Banner of the Reuters article
. Source.
Figure 2.
Reuters reconstruction of what the applet would have looked like
. Source.
Figure 3.
Inspecting the Reuters article HTML source code
. Source. The Reuters article only gave one URL explicitly: iraniangoals.com. But most others could be found by inspecting the HTML of the screenshots provided, except for the Carson website.
Ciro Santilli heard about the 2018 article at around 2020 while studying for his China campaign because the websites had been used to take down the Chinese CIA network in China. He even asked on Quora: www.quora.com/What-were-some-examples-of-the-websites-that-the-CIA-used-around-2010-as-a-communication-mechanism-for-its-spies-in-China-and-Iran-but-were-later-found-and-used-to-take-down-their-spy-networks but there were no publicly known domains at the time to serve as a starting point. Chris, Electrical Engineer and former Avionics Tech in the US Navy, even replied suggesting that obviously the CIA is so competent that it would never ever have its sites leaked like that:
Seriously a dumb question.
So when Ciro Santilli heard about the 2022 article almost a year after publication, and being a half-arsed web developer himself, he knew he had to try and find some of the domains himself using the newly available information! It was an irresistible real-life capture the flag. The thing is, everyone who has ever developed a website knows that its attack surface is about the size of Texas, and the potential for fingerprinting is off the charts with so many bits and pieces sticking out. Chris, get fucked.
Figure 4.
"Seriously a dumb question" Quora answer by Chris from the US Navy
. Source.
In particular, it is fun to have such a clear and visible to anyone examples of the USA spying on its own allies in the form of Wayback Machine archives.
Given that it was reported that there were "more than 350" such websites, it would be really cool if we could uncover more of those websites ourselves beyond the 9 domains reported by Reuters!
This article documents the list of extremely likely candidates Ciro has found so far, mostly using:
more details on methods also follow. It is still far from the 885 websites reported by citizenlabs, so there must be key techniques missing. But the fact that there are no Google Search hits for the domains or IPs (except in bulk e.g. in expired domain trackers) indicates that these might not have been previously clearly publicly disclosed.
If anyone can find others, or has better techniques: Section "How to contact Ciro Santilli". The techniques used so far have been very heuristic, and that added to the limited amount of data makes it almost certain that several IP ranges have been missed. There are two types of contributions that would be possible:
Perhaps the current heuristically obtained data can serve as a good starting for a more data-oriented search that will eventually find a valuable fingerprint which brings the entire network out.
Disclaimer: the network fell in 2013, followed by fully public disclosures in 2018 and 2022, so we believe it is now more than safe for the public to know what can still be uncovered about the events that took place. The main author's political bias is strongly pro-democracy and anti-dictatorship.
May this list serve as a tribute to those who spent their days making, using, and uncovering these websites under the shadows.
If you want to go into one of the best OSINT CTFs of your life, stop reading now and see how many Web Archives you can find starting only from the Reuters article as Ciro did. Some guidelines:
  • there was no ultra-clean fingerprint found yet. Some intuitive and somewhat guessy data analysis was needed. But when you clean the data correctly and make good guesses, many hits follow, it feels so good
  • nothing was paid for data. But using cybercafe Wifi's for a few extra IPs may help.
Figure 5.
viewdns.info activegameinfo.com domain to IP
. Source.
Figure 6.
viewdns.info aroundthemiddleeast.com IP to domain
. Source.
Figure 7.
DNS Census 2013 website
. Source. This source provided valuable historical domain to IP data. It was likely extracted with an illegal botnet. Data excerpt from the CSVs:
amazon.com,2012-02-01T21:33:36,72.21.194.1
amazon.com,2012-02-01T21:33:36,72.21.211.176
amazon.com,2013-10-02T19:03:39,72.21.194.212
amazon.com,2013-10-02T19:03:39,72.21.215.232
amazon.com.au,2012-02-10T08:03:38,207.171.166.22
amazon.com.au,2012-02-10T08:03:38,72.21.206.80
google.com,2012-01-28T05:33:40,74.125.159.103
google.com,2012-01-28T05:33:40,74.125.159.104
google.com,2013-10-02T19:02:35,74.125.239.41
google.com,2013-10-02T19:02:35,74.125.239.46
Figure 8.
The four communication mechanisms used by the CIA websites
. Java Applets, Adobe Flash, JavaScript and HTTPS
Figure 9.
Expired domain names by day 2011
. Source. The scraping of expired domain trackers to Github was one of the positive outcomes of this project.
Video 2.
Compromised Comms by Darknet Diaries (2023)
Source.
It was the YouTube suggestion for this video that made Ciro Santilli aware of the Reuters article almost one year after its publication, which kickstarted his research on the topic.
Full podcast transcript: darknetdiaries.com/transcript/75/
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Ciro Santilli Updated 2025-01-10 +Created 1970-01-01
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Ciro Santilli is a male human software engineer and activist born in Brazil, Earth in 1989 AD.
Quick facts:
Other people with the same name are listed at Section "Ciro Santilli's homonyms".
Figure 1.
19th century illustration of the Journey to the West protagonist Sun Wukong
. Source.
Sun Wukong (孙悟空) is a playful and obscenely powerful monkey Journey to the West. He protects Buddhist monk Tang Sanzang, and likes eating fruit, just like Ciro. Oh, and Goku from Dragon Ball is based on him. His japanese name is "Sun Wukong" (same Chinese characters with different Japanese pronunciation) for the love. His given name "Wukong" means literally "the one who mastered the void", which is clearly a Dharma name and fucking awesome in multiple ways. This is another sad instance of a Chinese thing better known in the West as Japanese.
It is worth noting however that although Wukong is extremely charming, Ciro's favorite novel of the Four Great Classic Novels is Water Margin. Journey to the West is just a Monster of the Week for kids, but Water Margin is a fight for justice saga. Sorry Wukong!
Figure 2.
Ciro Santilli playing with a pipette at the University of Cambridge circa 2017
.
The photo was taken in an open event organized by the awesome Cambridge Synthetic Biology outreach group, more or less the same people who organize: www.meetup.com/Cambridge-Synthetic-Biology-Meetup/ and who helped organize Section "How to use an Oxford Nanopore MinION to extract DNA from river water and determine which bacteria live in it".
Taking part in such activities is what Ciro tries to do to overcome his lifelong regret of not having done more experimental stuff at university. Would he have had the patience to handle all the bullshit of the physical word without going back to the informational sciences? Maybe, maybe not. But now he will probably never know?!
Notice the orange high visibility cycling jersey under the lab coat, from someone who had just ridden in from work as fast as possible as part of his "lunch break". It is more fun when it is hard.
Figure 3.
Scribe Jean Miélot, 15th century
.
Ciro Santilli fantasises that he would have make a good scribe in the middle ages, partly due to his self diagnosed graphomania, but also appreciation for foreign languages, and his mild obsession with the natural sciences.
OurBigBook.com is Ciro's view of a modern day scriptorium, except that now the illuminations are YouTube videos.
Chill and eat your bread in peace comes to mind. A scribe, in a library, reading and writing the entire day in peace and quiet. The life!
The job of a Internet-age scribe is basically that of making knowledge more open, legally extracting it from closed copyrighted sources, and explaining your understanding of it to the wider world under Creative Commons licenses on the web. And in the process of greater openess, given a well organized system, we are able combine the knowledge of many diffferent people, and thus make things more understandable than any single/few creator closed source source could ever achieve.
Ciro once saw some cartoon on Wikipedia help pages of a turtle with a book in one hand, and typing into Wikipedia on its computer, TODO find it. That cartoon summarizes well the modern scribe life.
Another analogous version of this fantasy more in touch with Ciro's sinophily is the ideal of the Chinese scholar, notably including their stereotypical attributes such as mastery of the Four arts.
Figure 4.
Ciro Santilli piling boxes as a child
. A natural born engineer.
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Ciro Santilli Big Five Personality traits Updated 2025-01-10 +Created 1970-01-01
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This is how Ciro Santilli evaluates himself on the Big Five personality traits:
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Ciro Santilli's 10 month stay in Coventry, United Kingdom, in the year 2000 Updated 2025-01-10 +Created 1970-01-01
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In the year 2000, Ciro lived with his parents for 10 months in the Coventry because his father took some courses at the University of Warwick. This was Ciro's most important educational experience, more so than any other inCiro Santilli's formal education, because it taught him the Holy Language of English, which infinitely expanded Ciro's Internet horizons, and shaped Ciro's having more than one natural language is bad for the world philosophy. When he came back to Brazil, Ciro skipped dozens of levels in his English school in Santos, São Paulo, Brazil, a Brazilian chain called Cultura Inglesa, and was put to study with much older teenagers who marveled at Ciro's incredibly cute, but since lost, British accent.
Another huge advantage of Coventry is that the Hearsall Community Primary School where Ciro studied was a regular British primary school but with two classes dedicated to foreign students to learn English before integrating with the British students. There were a several kids from Kosovo there due to the Kosovo War which was just ending, and it was there that Ciro made his first Chinese friend, yet unaware of course of the role the country would later play in his life. One particularly fun memory was that of playing soccer on the school playground with a sponge ball to avoid breaking the windows. Then one day it was raining, british weather of course, but Ciro still went for a header, and the soaked sponge ball was soaked and splashed Ciro with dirty water all over. Good days.
Ciro also played a bit of Rugby in those days in a local club.
Some other good memories are of reading the first two Harry Potters, playing and mostly watching other kids play Pokemon on their Game Boys and Pokemon trading cards, and going to a nearby commons playing field and woods, as it typical throughout the UK. Ciro also played some rugby with a local boys team TODO name? but for some reason his team was always crushed when they went to nearby towns to play against other teams. And Ciro also went with his family or with school to some nearby attractions, like Stratford-Upon-Avon (Shakespeare's hometown), and some castles.
Video 1.
When Ali G met the Beckhams by Comic Relief (2001)
Source. Ciro's father really liked Ali G. when they were in the UK in the year 2000, and Ciro would watch along, not fully getting all jokes, but still amused by his irreverence. This interview with David and Victoria Beckham is perhaps one of Ali's best performances.
Video 2.
Wicked wicked jungle is massive song from Ali G Indahouse (2002)
Source. OK, the last Ali G video, I promise. Maybe. This video illustrate well the main point of Ali G's humour: his cultural appropriation of American black rap/crime culture, despite it being entirely incongruence with his British background.
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Ciro Santilli's given name Updated 2025-01-10 +Created 1970-01-01
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"Ciro" is "Cyrus" from Cyrus the Great in both Portuguese and Italian (although with very different pronunciations), thus doubly appropriate given that Ciro Santilli was born in Brazil, and has Italian ancestry.
After he conquered Babylon in 539 BC from the hands Neo-Babylonian Empire, Cyrus the Great did a great service to the Hebrews by allowing war prisoners that were held in Babylon to back to their home Judea, thus terminating the Babylonian captivity. These Jews were imprisoned because they had previously fought a war or revolted against the Neo-Babylonian Empire and lost. As Wikipedia puts it:
According to Isaiah 45:1 of the Hebrew Bible, God anointed Cyrus for this task, even referring to him as a messiah (lit. 'anointed one'); Cyrus is the only non-Jewish figure in the Bible to be revered in this capacity.
He is therefore viewed extremely positively in the good old book. Ciro was quite happy about this name choice by his father, given the human rights connotations of the figure and Ciro Santilli's self perceived compassionate personality.
Particularly fun things related to modern Cyrus are:
Because it belongs to some relatively obscure character of the Bible, the name it has been mostly passed on by writing to every single Christian country, and every single language came up with different way of saying it, because the only place they would possibly hear that name said out loud would be in Church!
As of 2020, the country in which the name is most popular in undoubtedly Italy. In Brazil, it is definitely not common, but also not completely unheard of either, e.g. Ciro Gomes is a notable Brazilian politician.
And Ciro responds to all the versions of the name that he knows of. These include:
  • English:
    • direct English reading of "Ciro" as "See Roll". Not the most cultured, but its what things tend to converge to, especially in highly international environments where it would be impossible to try and learn the origin of everyone's name! So it's fine. Slightly too close to "zero" for comfort.
    • Cyrus, the actual English version of the name. Ciro was so happy when his elderly English neighbour who went to Eton college, upon recognizing what Ciro was, immediately said: "Ah, Cyrus the Great!" He was the cutest, and he had some culture. Many/most English speaking people can't or won't be very sure about the spelling, but the sound of the name has a distinctly exotic feel to it, and the sounds are immediately recognized without sound ambiguity (unlike Ciro vs Zero).
  • French:
    • direct French reading of "Ciro" as "See Rho" with accent on Rho. This sounds exactly like "Sirop", i.e. Syrup in French, which can be good or bad depending on how you look at it.
    • Cyrus, the actual version of the name in French. Similar remarks to those of English apply.
  • Portuguese: "See Ru" with accent on See, and rolling r, and very weak "u". Some people might have some doubt of how to spell it and will ask for confirmation if needed, though many/most will get it right. Not particularly exotic like it is for English speakers.
  • Italian: "Chee Ro" with accent on Chee and rolling r. Widely understood and correctly spelled, more than in any other language. Not exotic at all, could be any random dude from Naples.
    • "fratm Ciruzzo": reserved for the Napolitan mates. It means "my bro little Ciro" in Napolitan. The "m" in fratm is a possessive inflection ("my", "mio", but on the same word), and "frat" is of course something like he standard Italian fratello (brother).
  • German: Kyrus. Because Cyrus the Great is known Kyrus II. (Cyrus the Second, his grandfather was also called Cyrus), Ciro once joked to a German friend that he should call him Kyrus III! He liked that.
and glad to add any new ones as they come.
  • Persian (spoken in 2020s Iran): something like Kurush. Likely the closest sound one to the original, though not sure how certain we can be of this.
He is actually quite happy when people use the name in their own language, because that means they understand the origin of the name.
Some Ciro's of interest:
  • ciros.com is a reference to the possessive "Ciro's", as of 2022 a cute family-held Italian restaurant in Texas, i.e. "Ciro's restaurant"
    • More notably perhaps, Ciro's was the name a nightclub on Sunset Boulevard
    Figure 1.
    Neon Sign from Ciro's night club (1955)
    Source.
  • it is unclear if the usage of Cyrus in family names, e.g. the dread Miley Cyrus. www.houseofnames.com/cyrus-history mentions it may be of Greek origin.
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Ciro Santilli's mother-in-law Updated 2025-01-10 +Created 1970-01-01
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Figure 1.
Ciro Santilli with his soon-to-be mother-in-law during his wedding in 2017
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Ciro Santilli's naughty projects Updated 2025-01-10 +Created 1970-01-01
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If Ciro Santilli weren't a natural born activist, he chould have made an excellent intelligence analyst! See also: Section "Being naughty and creative are correlated".
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Ciro Santilli's psychology and physiology Updated 2025-01-10 +Created 1970-01-01
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Ciro Santilli's energy throughout the day varies as follows:
  • morning: highest
  • 11AM: peak exercise performance
  • after lunch: brain death. Possibly due to Ciro's partial Spanish descent?
  • late afternoon and evening: can do some stuff
Ciro has low tolerance to sleep deprivation which makes him very irritable, and low ability to sleep if there is any light. It must have to do with those damned ganglion cell photoreceptors. On the other hand, Ciro Santilli's wife can sleep without any problems with some morning light! It is definitely genetic. Ciro conjectures that people from very Northern parts of the world must have a gene that allows them to sleep even if there is some light, while more equatorial people don't. Maybe: pubmed.ncbi.nlm.nih.gov/33049062/
Ciro has mild olfactory synesthesia for star anise (八角, bajiao), which is widely used in Chinese cuisine and makes Ciro think uncontrollably of the color blue. Ciro does not have any other known synesthesias. He is also prone to nerd sniping form time to time.
Ciro is a reptilian-like being with cold hands and feet and low blood pressure. For this reason he believes that he will die of cancer or some respiratory problem. If the Chinese government doesn't get him first that is. This also partly explains why Ciro is not a big fan of swimming.
Besides Chinese food, Ciro really likes eating fruits and roasted nuts, maybe partly because he was born in Brazil, and partly because of monkey nature, see his Chinese name. At home he is known as "水果大王" (the big king of the fruits). Ciro is also a sucker for yoghurt (natural without added sugars and full fat, fat-tree yoghurt is terrible, often eaten with fruits). Ciro's "favorite drink" could be tonic water with freshly squeezed lemon. Tied with fresh fruit juices. Chocolate-wise, although not a huge fanatic, a Lindt dark chocolate with whole hazelnut pieces bar will do the job.
Ciro does not like receiving or giving gifts on expected social situations like birthdays or Christmas. Ciro believes that every day is equally precious, and can be a day to give, be it through awesome open source software contributions, or if you find something that your friend will like
Ciro has some respiratory allergies. When he was around 5, he had relatively serious asthma crisis which scared his parents to death. Throughout his life, he appears to be allergic at an intermediate level to: mold or dust mites (or whatever it is that old books/pillows have), cats (itching on touch), hay fever (in May in the UK, likely grass pollen). But even outside of hayfever season, Ciro's nose is constantly either running in the cold, or often partially blocked while sleeping throughout the year. Ciro believes however that this also gives him higher resistance to viral infections, since it has been many many years since he had a cold/flu, and when everyone in the office is going down with it, he's just fine. Ciro wonders if his active immune system will actually kill off cancers early, which he ranks as his most likely causes of death, along with respiratory and gastro-intestinal problems. Ciro has low blood pressure and cannot get fat, so cardio vascular problems seem much less likely.
Ciro is generally democrat due to his high compassion level. He believes that politics is highly genetically determined, and that just like you enter a room full of people and immediately like some and dislike others, the same goes for politics. People just vote for whoever they want to see more of because their way of speaking makes them feel good. There is not rationality involved in it at all.
Ciro self diagnoses a slight graphomania in the early 2020's. This is largely what led him to create OurBigBook.com, and contribute to Stack Overflow. Literature Nobel Prize laureate Naguib Mahfouz also suffers from the condition however, so maybe good can also come out of it:
If the urge to write should ever leave me, I want that day to be my last.
When Ciro was quite young, maybe around 7-10, when he got very angry or sad for some stupid reason (bullying perhaps? Ciro forgot), he would have a psychosomatic manifestation: his spine would become visibly curved sideways (scoliosis). While writing this paragraph, Ciro Googled it, and found e.g. medium.com/@michaelrosen_94192/the-root-cause-of-scoliosis-5c461002b634 that describes:
The Root Cause of Idiopathic Scoliosis
It is proposed that Adolescent Idiopathic Scoliosis (AIS) is a condition created by emotional stress. Evidence is presented that unresolved emotional stress can cause unbalanced tensions in the fascia and growing muscles that gradually deform the spinal column.
so it is a somewhat well known thing! Incredible. Can you imagine the level of the passions that lead to such physical deformations? But of course, it was all for nothing.
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Ciro Santilli's Stack Overflow contributions Updated 2025-01-10 +Created 1970-01-01
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Figure 1.
Ciro Santilli's amazing Stack Overflow profile
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Figure 2.
Ciro Santilli's Stack Overflow stats
. Source data: ciro-santilli-stack-overflow-stats.csv. Top obtained manually from pages such s=as: stackexchange.com/leagues/1/year/stackoverflow/2023-01-01. Answer count obtained with this Stack Exchange Data Explorer data.stackexchange.com/stackoverflow/query/433214/count-of-answers-by-user-over-time and then manually pasting it in. Related announcements:
Ciro Santilli's Stack Overflow contributions have, unsurprisingly, centered around the subjects he has worked with: systems programming and web development, and necessary tooling to get those done, such as Git, Python, Bash and Ubuntu.
His best answers are listed at: Section "The best articles by Ciro Santilli".
Stack Overflow has been the initial centerpiece of Ciro Santilli's campaign for freedom of speech in China, until Ciro noticed that GitHub might be potentially even more effective for it.
In Stack Overflow Ciro likes to:
  • answer important questions found through Google which he needs to solve an actual problem he has right now, and for which none of the existing answers satisfied him, and close duplicates.
  • monitor less known tags which very few people know a lot about and where the knowledge sharing desperately lacking, but in which Ciro specializes and therefore has some uncommon knowledge to share
In practice it also happens that Ciro:
When he gets an upvote on one of his more obscure answers, Ciro often re-reads it, and often finds improvements to be made and makes them.
He doesn't like to refresh the homepage looking for easy reputation on widely known subjects. See also: online forums that lock threads after some time are evil.
The result is that Ciro ends up getting relatively a lot of reputation without much work! The term passive income, much beloved by fake investment gurus, comes to mind. But now it's "passive reputation"! And it is useless! Yay!
For this reason, Necromancer is Ciro's favorite badge (get 5 upvotes on a question older than 60 days), and as of July 2019, he became the 1 user with the most of this badge. Announcement on Twitter.
The number two at the time was VonC (see also: Section "Epic Stack Overflow users"), who had about 16 times more answers than Ciro in total! From this query: data.stackexchange.com/stackoverflow/query/1072396?&Date=2019-07-01&UserId=895245 it can be seen that as of July 2019, 1216 out of his 1329 answers were answered 60 days after the questions and constitute potential necromancers! Compare that to VonC's 1643 potential necromancers out of 21767 answers!
VonC eventually took back the lead in 2022, dude's a machine!!! twitter.com/cirosantilli/status/1546389532014247936
Someone at Ciro's work once said something along:
The more patents a research project generates, the less actually working products it produces.
and this does ring true in Stack Overflow as well. When you are answering stuff, it means that you either didn't know, or that the information wasn't well available, and so your specific application is progressing slowly because of that. Once the generic prerequisites are well solved and answered, you will spend much more time on your business specific things rather than anything else that can be factored out across projects, and so you will get more "directly useful work" done, and less Stack Overflow answers. Of course, without the prior research in place, you can't get the final product done either.
In terms of per year reputation ranks, Ciro was in the top 100 in of the 2018 ranking with 38,710 reputation gained in that year: stackexchange.com/leagues/1/year/stackoverflow/2018-01-01?sort=reputationchange&page=4 (archive). He reached top 50 in 2022. Note that daily reputation is mostly capped to 200 per day, leading to a maximum 73000 per year. It is possible to overcome this limit either with bounties or accepts, and Ciro finds it amazing that some people actually break the 73k limit by far with accepts, e.g. Gordon Linoff reached 135k in 2018 (archive)! However, this is something that Ciro will never do, because it implies answering thousands and thousands of useless semi duplicate questions as fast as possible to get the accept. Ciro's reputation comes purely from upvotes on important question, and is therefore sustainable without any extra effort once achieved. Interestingly, Ciro appeared on top of the quarter SE rankings around 2019-11: web.archive.org/web/20191112100606/https://stackexchange.com/leagues but it was just a bug ;-)
There is no joy like answering an old question, and watching your better answer go up little by little until it dominates all others.
Stack Overflow reputation is of course, in itself, meaningless. People who contribute to popular subjects like web development will always have infinitely more reputation than those that contribute to low level subjects.
What happens on the specialized topics though is that you end up getting to know all the 5 users who contribute 95% of the content pretty soon as you study those subjects.
Like everything that man does, the majority of Ciro's answers are more or less superficial subjects that many people know but few have the patience to explain well, or they are updates to important questions reflecting upstream developments. But as long as they save 15 minutes from someone's life, that's fine.
There is great beauty when you are involved in a programming problem, and you suddenly remember: wait, I answered something related a few years ago! And especially so when you can go back and improve your old answer with new insight. This has great value, because when you were more newbie, you would have typed different words into Google Search than you would now. So by updating posts from when you were a newbie, you are helping other newbies more, as they are more likely to be also searching for those keywords. It is also very nice to have some head start on the answer's upvote count and not have to bootstrap yet another answer from 0 upvotes and have to go through all the competition!
For example, Ciro's most upvoted answer as of July 2019 is stackoverflow.com/questions/18875674/whats-the-difference-between-dependencies-devdependencies-and-peerdependencies/22004559#22004559 was written when he spent his first week playing with NodeJS (he was having a look at Overleaf, later merged into Overleaf, for education), which he didn't touch again for several years, and still hasn't "mastered" as of 2019! This did teach a concrete life lesson to Ciro however: it is impossible to know what is the most useful thing you can do right now very precisely. The best bet is to follow your instincts and do as much awesome stuff as you can, and then, with some luck, some of those attempts will cover an use case.
Ciro tends to take most pride on his systems programming answers, which is a subject that truly relatively few people know about. He likes it when he goes insanely deep into a subject, way beyond what OP had in mind, exposing full root causes and broader causes, see e.g.:
Ciro also derives great joy from his "media related answers" (3D graphics, audio, video), which are immensely fun to write, and sometimes borderline art, see answers such as those under "OpenGL" and "Media" under the best articles by Ciro Santillis or even simpler answers such as:
There is something of greater value in perfectly presented technical knowledge, that goes beyond than simply getting something done. The pleasure of understanding and mastering something, and perhaps of the explanation itself. Sometimes when answering, Ciro feels like a tailor, where ASCII is his cloth. See also: Section "The art of programming", Section "Physics and the illusion of life".
Ciro's deep understanding of Stack Overflow mechanisms and its shortcomings also helped shape his ideas for: OurBigBook.com. So it is a bit funny to think that after all time Ciro spent on the website, he actually wants to destroy it and replace it with something better. There can be no innovation without some damage. It also led to Ciro's creation of Stack Overflow Vote Fraud Script.
After answering so many questions, he ended up converging to a more or less consistent style, which he formalized at:
Like any other style guide, this answer style guide, once fully incorporated and memorized, allows Ciro to write answers faster, without thinking about formatting issues.
Ciro also made a question title style guide: meta.stackexchange.com/questions/10647/how-do-i-write-a-good-title/311903#311903 but for some reason the Stack Overflow community prefers their semi-defined title meta-language to proper English. Go figure.
Ciro started contributing to Stack Overflow in 2012 when he was at École Polytechnique.
Like all things that end up shaping the course of one's life, Ciro started contributing without thinking too much about it.
His first answer was to the LaTeX question: Standalone diagrams with TikZ?, which reflects the fact that this happened while Ciro was reaching his Ciro Santilli's Open Source Enlightenment.
Ciro's first upvote was for his 2012 question: How to run a Python script portably without specifying its full path?
When he started contributing, Ciro was still a newbie. One early event he will never forget was when someone mentioned a "man page", and Ciro commented saying that there was a typo!
When Ciro reached 15 points and gained the ability to upvote, it felt like a major milestone, he even took a screenshot of the browser! 1k, 10k and 100k were also particularly exciting. When the 100k cup (archive) arrived in 2018, Ciro made a show-off Facebook post (archive). At some point though, your brain stops caring, and automatically filters out any upvotes you get except on the answers that you are really proud of and which don't yet have lots of upvotes. The last remaining useless gamed achievement that Ciro looked forward to was legendary (archive), and which he achieved on 2021-02-16.
Figure 4.
Ciro Santilli with his Stack Overflow 100k reputation cup
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From the start, Ciro's motivations for contributing to Stack Overflow have been a virtuous circle of:
  • save the world through free education
  • It feels especially amazing when people in the real world start taking note of you, and either close friends tell you straight out that you're a Stack Overflow God, or as you slowly and indirectly find out that less close know or came to you due to your amazing contributions.
It is also amazing when you start having a repertoire of answers, and as you are writing a new answer, you remember: "hey, the knowledge of that answer would be so welcome here", and so you link to the other answer as well at the perfect point. This somewhat achieves does what OurBigBook.com aims to do: for each small section of a tutorial, gather the best answers by multiple people.
Ciro feels that his Stack Overflow alter ego is kenorb.
Another one is Aaron Hall, who is also very high on the necromancer list, answers in Python which is a topic Ciro cares about, and states on his profile:
Follow me on Twitter and tell me what canonical questions you would like me to respond to!
so another necromancer.
Way to go.
Ciro also asks some questions on a ratio of about 1 question per 10 answers. But Ciro's questions tend to be about extremely niche that no one knows/cares about, and a high percentage of them ends up getting self answered either at asking time or after later research.
Some fun reactions to Ciro's Stack Overflow activity:
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Ciro Santilli's Twitter accounts Updated 2025-01-10 +Created 1970-01-01
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Accounts controlled by Ciro Santilli on Twitter:
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Ciro Santilli's wife Updated 2025-01-10 +Created 1970-01-01
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Excerpt of For Whom the Bell Tolls by Ernest Hemingway (1940), slightly adapted for brevity:
"The earth moved," Maria said, not looking at Pilar. "Truly. It was a thing I cannot tell thee."
"It never moves more than three times in a lifetime. Did it really move?" Pilar Said.
"Yes," the girl said. "Truly."
"For you, Inglés?" Pilar looked at Robert Jordan. "Don't lie."
"Yes," he said. "Truly."
Related: www.reddit.com/r/OldSchoolCool/comments/hj7bfq/comment/fwkik5v/
Video 1.
Teresinha performed by Maria Bethânia
. Source.
Composed and previously performed by Chico Buarque in 1987: Video "Teresinha by Chico Buarque".
This video has English subtitles, click CC to enable them. This is one of the the best popular Brazilian music (MPB) of all time. A transcribed English translation adapted slightly by Ciro Santilli to be a bit less literal:
The first one came to me as if coming from the flower shop
Brought a stuffed toy, brought an amethyst pin
He told me about his journey and the perks he had
He showed me his watch and called me 'queen'
He found me so undefended that he touched my heart
But he denied me nothing, so, frightened, I said 'no'
The second came to me as if coming back from the bar
Brought a bottle of brandy too bitter to swallow
He asked me about my past and sniffed my food
He searched through my drawer and called me 'the lost one'
He found me so undefended that he scratched my heart
But he gave me nothing, so, frightened, I said 'no'
The third one arrived like he was arriving from nowhere
He brought me nothing and also asked me nothing
I barely know his name but I understand what he wants
He laid on my bed and called me 'woman'
He arrived very sneakily and before I could say 'no'
He settled inside my heart as its owner
Video 2.
Song of pig by Xiangxiang (2005)
Source. Chinese: 猪之歌 by 香香. Baidu Baike page: baike.baidu.com/item/猪之歌/16181836. A dude wrote the lyrics though: 毛慧 (Mao Hui), but wouldn't have been a hit if he had performed it given the insane gender imbalance in China. Chinese lyrics on mojim: mojim.com/cny104491x1x1.htm. A quick translation:
Pig, you have two holes in your nose, and they have snot when you catch a cold
Pig, you have dark eyes, you can't see the edge
Pig, your ears are so big, you can't hear me calling you stupid
Pig, your tail is curled and curled. It turns out that you can't live without it when you run and jump.
Pig head, pig brain, pig body, pig tail, a wise toy who is never picky about food
Every day sleep until after three in the afternoon, you never brush your teeth, and you never fight
Pig, your belly is so bulging, you can tell at a glance that you can't stand the hardships of life
Pig, your skin is so white, you must have been from a rich family in your past life, oh
Legend has it that your ancestor had eight rakes, and it hit a peach blossom criminal.
When you see a beautiful girl, you chuckle, won't blush, and isn't afraid
Some people in the West are quite amused by the usage of "pig" as a term of endearment.
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