Ciro Santilli @cirosantilli 40 

Meta breaking glitch Updated 2025-07-16

A meta breaking glitch of a video game is a glitch that when discovered significantly breaks the meta.

In non-video game-game, it does sometimes happen that a meta is broken as well, but these events tend to be rarer and less dramatic than meta-breaking due to computer program glitches.

In PvP games, those glitches are generally forbidden by existing rules, and quickly patched after discovered.

In speedrunning however, they are either incorporated in the existing strategy, or may lead to the creation of a new run category for particularly significant glitches.

The Controversial Olofboost by theScore esports (2018)

Source. Descries the boost used by CS:GO pro-team Fnatic during the DreamHack Winter 2014 quarterfinals.

Rock music Updated 2025-07-16

Space Oddity by David Bowie (1969)

Source.

Stairway to Heaven by Led Zeppelin (1971)

Source.

Ciro Santilli's wife Updated 2025-07-16

For more china-related stuff see: cirosantilli.com/china-dictatorship/wife

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."

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

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.

Michelson-Morley experiment Updated 2025-07-16

Published as On the Relative Motion of the Earth and the Luminiferous Ether.

Michelson Interferometer by Amrita Vlab (2013)

Source. Shows the optical controls and alignment in more detail.

Michelson Interferometer by TSG Physics (2012)

Source. TSG PHysiQuantum electrodynamics bibliographycs is the channel from the MIT Department of Physics Technical Services Group. In the video they produce a very clear round interference pattern.

Michigan State University Updated 2025-07-16

Not to be confused with the University of Michigan. Not confusing at all right!

Micro Bit getting started Updated 2025-07-16

When plugged into Ubuntu 22.04 via the USB Micro-B the Micro Bit mounts as:

/media/$USER/MICROBIT/

e.g.:

/media/ciro/MICROBIT/

for username ciro.

Loading the program is done by simply copying a .hex binary into the image e.g. with:

cp ~/Downloads/microbit_program.hex /media/$USER/MICROBIT/

The file name does not matter, only the .hex extension.

The back power light flashes while upload is happening.

Flashing takes about 10-15 seconds for the 1.8 MB scroll display hello world from microbit-micropython.readthedocs.io/en/v1.0.1/tutorials/hello.html:

from microbit import *
display.scroll("Hello, World!")

and the program starts executing immediately after flash ends.

You can restart the program by clicking the reset button near the USB. When you push down the program dies, and it restarts as soon as you release the button.

Microphone Updated 2025-07-16

Testing and Circuit for a Condenser microphone by RSD Academy (2018)

Source.

Not very numerical, but shows a simple working breadboard circuit and an oscilloscope. He whistles with his mouth to get a pretty pure frequency.

That type of microphone requires a bias voltage. The circuit is in Ciro's ASCII art circuit diagram notation:

DC_9---R_10k--+--MICROPHONE--+--G
              |              |
              +-------V------+

Soundwaves on an oscilloscope by Animated Science (2015)

Source. Dude speaking to microphone. Some analysis of how different sounds look like. No circuit diagram.

Remarkable (tablet) Updated 2025-07-16

Remarkable 2 is really, really good. Relatively fast refresh + touchscreen is amazing.

No official public feedback forum unfortunately:

PDF table of contents could be better: twitter.com/cirosantilli/status/1459844683925008385

Replication crisis Updated 2025-07-16

Of course, if academic journals require greater reproducibility for publication, then the cost per paper increases.

However, the total cost has to be smaller than the cost everyone who reads the paper spends to reproduce, no?

The truth is, part of the replication crisis is also due to research groups not wanting to share their precious secrets with others, so they can keep ahead of the publication curve, or maybe spin off a startup.

And when it comes to papers, things are even crazier: big companies manage to publish white papers in peer reviewed journals.

Ciro Santilli wants to help in this area with his videos of all key physics experiments project idea.

Cool initiative. Papers that do not share source code should be banned from peer reviewed academic journals.

Computable problem Updated 2025-07-16

decidable problem is to a decision problem
like a computable problem is to a function problem

Computational biology Updated 2025-07-16

Computational complexity of modular exponentiation Updated 2025-07-16

math.stackexchange.com/questions/2382011/computational-complexity-of-modular-exponentiation-from-rosens-discrete-mathem mentions:

b^{n} m o d m

(1)

can be calculated in:

l o g (m)^{2} l o g (n)

(2)

Remember that

l o g (m)

and

l o g (n)

are the lengths in bits of

m

and

n

, so in terms of the length in bits

M

and

N

we'd get:

M^{2} N

(3)

Computational physics Updated 2025-07-16

The intersection of two beautiful arts: coding and physics!

Computational physics is a good way to get valuable intuition about the key equations of physics, and train your numerical analysis skills:

classical mechanics
- "Real-time heat equation OpenGL visualization with interactive mouse cursor using relaxation method" under the best articles by Ciro Articles
phet.colorado.edu PhET simulations from University of Colorado Boulder

Other child sections:

Computational protein folding implementation Updated 2025-07-16

Microwave transmission for trading Updated 2025-07-16

Finance is a cancer of society. But I have to admit it, it's kind of cool.

arstechnica.com/information-technology/2016/11/private-microwave-networks-financial-hft/ The secret world of microwave networks (2016) Fantastic article.

Lasers Transmit Market Data and Trade Execution by Anova Technologies (2014)

Source. Their system is insane. It compensates in real time for wind movements of towers. They also have advanced building tracking for things that might cover line of sight.

Computer biliography Updated 2025-07-16

Computer generated child pornography Updated 2025-07-16

Computer History Museum Updated 2025-07-16

Computer scientist Updated 2025-07-16