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exocortex

@ exocortex @discuss.tchncs.de

Posts
10
Comments
226
Joined
3 yr. ago

  • number box o number box

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  • Isn't a tensor the generalization of scalar, vector matrix and so on? (PLUS the invariance under coordinate transforms?)

    A box would be 3-dimensional indicating that tensors have 3 indices when in reality they have n-indices. Ir am i reading it wrong?

  • AI experts return from China stunned: The U.S. grid is so weak, the race may already be over

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  • The big difference that I see is that they investes in people for a long while now. They did what they can so people can get a decent education. That's also the reason why they don't allow kids to use tiktok and so on - it's hindering the next generation's ability to think. They know that you need many intelligent people to drive whatever other innovation you want to have later. That's why they're pulling ahead so fast while we are collapsing. I am not even living in the US, but even here the education system is crumbling.

    The west has trapped itself in the thought of technology without people. The idea that few clever people can design perfect systems that drive everything for us. That we just need to support those few individuals to get maximum return. China is supporting the broad masses. It's like creating a fertile soil.

    Who knows what all the asterisks are causing in the future. But at the moment it's just no comparison. We've gone backwards, while they're so far ahead we barely see them.

  • Spotify wird teurer – lohnt sich jetzt der Wechsel?

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  • Deleted

    Permanently Deleted

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  • I get the meme (though why was this single unstable point - imagemagick in the original xkcd - removed? To make the left side seem more stable clmpared to the original idea?), it might be trueish atm. But with rust I feel that a lot of projects that are rewritten in rust are quicker arriving at a "finished" (or almost finished) state where they are more or less just tools being used without much discussion anymore. I guess a lot of commonly used tools already use Rust in some way, but i rarely is an issue which makes this discussion-worthy or generates enough conflict in order to raise awareness outside.

    I have a hunch that open-source rust-devopment is less of a hassle as a lot of discussion about code or the quality therof is simply avoided by a stricter compiler. If the code committed compiles with rustc there's less possibility of it breaking other things in the codebase or containing hidden dangers that need to be discussed. Overall less friction, less overhead and distruction from the actual coding.

  • How do AI data centers manage to consume water, but when I cool my house, my A/C makes water?

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  • It's used like sweating. We lose heat by havibg water evaporate off our skin. Right now get warm water and put it on your arm, then blow on it. It gets cold until it is fully evaporated. For water to change from the liquid to the gaseeous phase it needs energy. Think like water molecules are holding hands in a liquid. If one of them wants to come free and fly through the air it needs to somehow get the energy to break free from the grip of the others first. When water evaporates from your arm it tales this energy in the form of heat. It turns heat and uses it to get to the gaseous phase. As long as there is water on your arm it can be cooled that way.

    That's what data centers do as well. They take water to cool their processors and the let part of it evaporate into the air. That way the parts of the water that remain are like your arm - the get cool quickly.

    It's very effective. But if you live in a small town and next door there's a massive datacenter that takes out all the groundwater and basically just boils it until it disappears, you might get angry after a while.

  • What movie did you see too young that still haunts you to this day?

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  • Sorry, but you're wrong. That movie is in fact a solid 10/10.

  • Tom Lehrer

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  • I really liked Tom Lehrer. We named our daughter partly because of one of his songs (which my grandmother loved and often talked about) - Alma. Fortunately Her and Tom's Life have a little bit of overlap.

  • What's a movie you can watch often and it never gets old?

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  • Moneyball - very good choice. I'd like to add "The Big Short" as well.

  • "In to the ruins..." (Paul Hoppe) [NSFW]

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  • Nice. This seems heavily inspired by Giovanni Batista Piranesi's "Carceri" (1750). I love these graphics. They're like a weird dreamworld. I saw some as a kid once and remembered them even decades later, but only thought they were from a remembered dream - until i saw them in a museum again. I hope this comic expands on them a bit.

  • Kevin Spacey calls for the release of the 'Epstein files'

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  • Dammit, we all think alike nowadays.... XD

  • the universe about to have a little minty b

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  • That's why there's quant mechanics. The simulation can always invent invent thinga on the fly to reduce computational load. It's like lazy execution when soneone's looking i.e. me - let's not kid ourselves: the simulation is only simulating my surroundings - of which all af you are part of. Yadda yadda, there's only me.

    On another note: the simulation can also always rewritebparts of my brain and retroactively change stuff in my memory making me believe different things. So i could also be reprogrammed to believe I saw this or that insteas of

  • rule

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  • Maybe you know it but if not read Mark Twain's Essay "The Aweful German Language". It's a fantastic and bellyachingly funny thing to read. I am a native speaker and have to admit Mark makes so many brilliant points.

  • What is a movie that "looks like" it would suck, but actually is well written and acted and a good time?

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  • Yes! Unexpectedly good movie!

  • Was kauft ihr in größeren Mengen als andere?

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  • Apropos Shampoo Ich hab ab Covid angefangen mitm rasierer die Haare selbst zu schneiden. Seit dem brauche ich aucv kein Shampoo mehr. Trocknen können sie auch von alleine.

  • The ‘Profound’ Experience of Seeing a New Color

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  • Captain Obvious would like to chime in: (sorry 😅)

    Every color that we see is created by different types of receptors being stimulated together. A linear combination of three of these types. Arguably there isn't really a wavelength that only stimulates one type of receptor exclusively as their absorbtion areas overlap - so it isn't even that precise to call one receptor the "green" receptor as it sees a continuum of wavelength (of which a lot are also detected by the (so-called) "red" receptor.

    It's a little egg-and-hen-problem with the naming here.a way out of it would be to only speak about spectra if it's in the physical realm and color of its in the percetral realm.

  • Just installed mint yesterday, I get it now

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  • I've been using the commandline for so long but was always too lazy to look up the rest of these commands after ctrl+a/e and ctrl+r THANK YOU!!!

    post this commend again and again! There's always lazy idiots like me who will be helped that way!

  • Paris Mayor: I want a city with less cars. Perhaps it's controversial, but I think I'm on the right side of history. I had lobbyists from car companies threaten me in my own office.

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  • I can only imagine. I think there's few cities that have undergone such a transformation as has paris in the last 10 years. It's lovely to see. But all the anger that people have felt from that is probably almost exclulively projected onto her. She's the lonely reason for alll the hardships that the carbrained old people in Paris have to endure. That's what they feel everyday.

    I think she should have a Car-only-day before the election where everyone who switched to a bike is driving by car for the day. The resulting chaos would be a nice reminder for what the city has gained in lofe quality during the last decade.

    It's easy to get accustomed to improved circumstances like more bike travel. But people seldomly forget if something has negatively affected them - especially if it was caused in some remote way by her policies.

  • In nur 17 Jahren - Paris sagt „Au Revoir“ zum Auto: Karte zeigt die bemerkenswerten Folgen

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  • Das ist ein wichtiger Punkt.

    Der Vergleich mit Deutschland ist da schon echt krass. In Berlin hat mit zum großen Teil den Stimmen der Außenbezirke die CDU gewonnen und sofort angefangen Radweg-Projekte zu stoppen, bzw sogar zurückzubauen. Diese Radwege waren aber fast nur in den Innenbereichen, do wo die CDU keine Mehrheit hatte. Das ist unglaublich Rücksichtslos. Denn solche Radwege werden (bei uns) typischerweise nicht auf stadtebene geplant, sondern auf Bezirksebene. Das sind eher so pilotprojekte, die aufgrund von lokalen Initiativen entstehen. Die baut die CDU wieder ab mit der begründung, dass irgednwelche Außenbezirkler dafür gestimmt haben. Das isr absolut übergriffig.

    In Paris werden solche Radwege zum Glück nicht bezirksweise von irgdnwelchen Initiativen geplant, sondern direkt zentral. Dadurch konnten die auch so einen Fortschritt machen. Ich bin recht regelmäßig in Paris und diese Transformation ist großartig zu sehen. Vor 10 Jahren hatte ich um meinen einsam Fahrradfahrenden Freund dort große Angst. Jeden tag durch das Getümmel aggressiver Autos zu fahren schien selbstmörderisch. Dann wurden stück für stück Autoparkplätze durch Leihräder-Parkplätze ersetzt, wichtige Straßen für Autos gesperrt. Sehr radikal und gegen riesiges Geschrei wütender Leute. Aber es hat gewirkt und inzwischen fährt die halbe Stadt Rad.

  • Pressure washer reality

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  • Someone should do this! There's already this drain-unvlogging-videos. Now I need powerwashing the inner city videos. Cleaning-algae-from-driveway-videos are lame. I want filth removal under a busy bus-stop! Get yourself a neon construction vest and let's go!