Jonathan Jeffrey

learning how to create

[Jonathan Jeffrey @jonrjeffrey]

I published two blog posts today. One is about counting: once you get to 3, you basically know to count. The second is more speculative: is there a bigger principle---a "third way"---that goes beyond religion and science but yet contains both as limits? https://t.co/VurufJRsty

[Jonathan Jeffrey @jonrjeffrey]

wrote a quick estimate of how many bits could be in "common sense." it's remarkably small (and yet so hard to convey to machines)! https://t.co/AnYTwO3d1H

[Jonathan Jeffrey @jonrjeffrey]

@zarazhangrui A similar argument can be made about specialization with people. I don’t have to learn how to hunt or build shelter because others farm and construct homes. You also now have the opportunity to work at a higher level to feed nations and architect cities.

[Jonathan Jeffrey @jonrjeffrey]

Here's what I want to learn about next: anti-de Sitter space (completely rather than handwavily); the origin of eukaryotes; and continual learning methods for AI. https://t.co/6nCccR54A4

[Jonathan Jeffrey @jonrjeffrey]

I started to blog at https://t.co/X8Is0QlQ2G ! Longer articles are in the works.

[Jonathan Jeffrey @jonrjeffrey]

Is a corollary of the holographic principle that you absolutely can judge a book by its cover?

[Amir Safavi-Naeini @Amir_Safavi_N]

@nattyover I have read about 50% of the nature paper. It’s a really nice experiment. One problem with the headline is this: when an astrophysicist simulates some dynamics on a computer, we don’t say “Physicists create a galaxy using a supercomputer” — its just misleading.

[Jonathan Jeffrey @jonrjeffrey]

We should define a phoot as the distance light travels in one nanosecond: which is approximately 11.8 inches, or about a foot https://t.co/VSKe5ITSi2

[Jonathan Jeffrey @jonrjeffrey]

Another thing I was recently pleasantly surprised by: when wondering how to use the saved ARandR screen layout without opening the program, I realized that it actually saved an executable shell script calling xrandr, so I could just immediately run it. Well designed.

[Jonathan Jeffrey @jonrjeffrey]

Pleasantly surprised at how well native Vim spellcheck works in LaTex files.

[Jonathan Jeffrey @jonrjeffrey]

After (occasionally) accidentally spelling success as "sucess" for years, only recently did I realize that it has two c's because the first c represents the hard c sound, and the second the soft: suksess, just like aksident. Unfortunately the same logic does not work for okasion.

[Jonathan Jeffrey @jonrjeffrey]

Crazy that cattle livestock weigh more in carbon than all wild mammals, bird, reptiles, and amphibians put together.

Graphic from here: https://t.co/D6WixV0ojj / Original paper here: https://t.co/HK8L10GA9J / Paper's livestock data analysis here: https://t.co/JtOwa5f5Qy

[Jonathan Jeffrey @jonrjeffrey]

Change: started to sort music / prospective videos to playlists before removing source channel from recommends, and marked nearly all mixes as Not Interested.

[Jonathan Jeffrey @jonrjeffrey]

@pickover Isn't it just zero itself?

[Jonathan Jeffrey @jonrjeffrey]

@CmonMattTHINK For non-negative integers, it's nice to have (a+b)! = a! b! + N(a,b), where N(a,b)>=0 are extra permutations from swapping or interspersing sets (instead of ordering them separately). But inserting zero elements never changes the order, so N(a,0)=0. Then (a+0)!=a!0! implies 0!=1.

[Jonathan Jeffrey @jonrjeffrey]

@benorlin @CmonMattTHINK You hit on a great way to actually visualize "ways to arrange nothing". After you have selected the n items and accounted for the n! ways to order them, you still need to divide by the 0! ways to order the ones you *didn't* pick. So 0! = 1/(# ways to take all) = 1 / 1 = 1.

[Jelani Nelson @minilek]

Deep dive into the California Math Framework by Brian Conrad, Professor of Mathematics at Stanford and director of their undergraduate math major. He is making his public comments available at https://t.co/sb7IAGnZ1D. A quote of his below in thread:

[Jonathan Jeffrey @jonrjeffrey]

Pretty cool that you can use networks of momentum exchange tethers to make space travel more efficient! No need to make mass needed for momentum change go to waste https://t.co/GRAXcDCos1

[Jonathan Jeffrey @jonrjeffrey]

Out of the blue, I realized the movie Titanic is essentially a much better Somewhere in Time. (Others have remarked on this too: https://t.co/WV9No6KtCC) I like both though, Somewhere in Time more for personal reasons: wouldn't it be wonderful to time travel in a dream?

[Jonathan Jeffrey @jonrjeffrey]

@j_bertolotti You could make the argument that if you didn't clearly explain that's it's not so simple, you weren't writing clearly enough