Ciro Santilli @cirosantilli  40

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Classification of 5-transitive groups Updated 2025-07-16

M_{12}

and Mathieu group

M_{24}

www.maths.qmul.ac.uk/~pjc/pps/pps9.pdf mentions:

The automorphism group of the extended Golay code is the 54-transitive Mathieu group $M_{24}$ . This is one of only two finite 5-transitive groups other than symmetric and alternating groups

Hmm, is that 54, or more likely 5 and 4?

scite.ai/reports/4-homogeneous-groups-EAKY21 quotes link.springer.com/article/10.1007%2FBF01111290 which suggests that is is also another one of the Mathieu groups, math.stackexchange.com/questions/698327/classification-of-triply-transitive-finite-groups#comment7650505_3721840 and en.wikipedia.org/wiki/Mathieu_group_M12 mentions

M_{12}

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Classification of 6-transitive groups Updated 2025-07-16

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math.stackexchange.com/questions/700235/is-there-an-easy-proof-for-the-classification-of-6-transitive-finite-groups says there aren't any non-boring ones.

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Electron transport chain Updated 2025-07-16

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Good animation explaining it: Video "Electron transport chain by HarvardX (2017)".

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Vertebrate Updated 2025-07-16

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The big breakthrough of the vertebrates appears to be the ability to swim around in a straight line and eat smaller species that are floating about.

Bones appear to help that a lot!

It is likely the most efficient design to travel long distances. Be thin and wiggle your tail around.

Perhaps smaller animals can skip the bone thing. Maybe a notable example are the lancelets, which look a bit like small fish. But they only go up to 8 cm.

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Metallurgical Laboratory Updated 2025-07-16

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The lab that made Chicago Pile-1, located in the University of Chicago. Metallurgical in this context basically as in "working with the metals uranium and plutonium".

Given their experience, they also designed the important X-10 Graphite Reactor and the B Reactor which were built in other locations.

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Mitochondrial carrier Updated 2025-07-16

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BusyBox Updated 2025-07-16

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Pauline epistles Updated 2025-07-16

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Number of the beast Updated 2025-07-16

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SingularityNET Updated 2025-07-16

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singularitynet.io/

Ben Goertzel's fog computing project to try and help achieve AGI.

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Half-silvered mirror Updated 2025-07-16

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How to convert async to sync in JavaScript Updated 2025-07-16

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God, it's impossible! You just have to convert the entire fucking call stack all the way up to async functions. It could mean refactoring hundreds of functions.

To be fair, there is a logic to this, if you put yourself within the crappiness of the JavaScript threading model. And Python is not that much better with its Global Interpreter Lock.

The problem is that async was introduced relatively late, previously we just had to use infinitely deep callback trees, which was worse:

myAsync().then(ret => myAsync2(ret).then(ret2 => myAsync3(re3)))

compared to the new infinitely more readable:

ret = await myAsync()
ret2 = await myAsync2(ret)
ret3 = await myAsync3(ret3)

But now we are in an endless period of transition between both worlds.

It is also worth mentioning that callbacks are still inescapable if you really want to fan out into a non-linear dependency graph, usually with Promise.all:

await Promise.all([
  myAsync(1).then(ret => myAsync2(ret)),
  myAsync(2).then(ret => myAsync2(ret)),
])

Bibliography:

And then, after many many hours of this work, you might notice that the new code is way, way way slower than before, because making small functions async has a large performance impact: madelinemiller.dev/blog/javascript-promise-overhead/. Real world case with a 4x slowdown: github.com/ourbigbook/ourbigbook/tree/async-slow.

Anyways, since you Googled here, you might as well learn the standard pattern to convert callbacks functions into async functions using a promise: stackoverflow.com/questions/4708787/get-password-from-input-using-node-js/71868483#71868483