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Reality has a surprising amount of detail (2017)

johnsalvatier.org

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Re: Reality has a surprising amount of detail (2017)

#201

Earlier quoted context omitted.

https://www.merriam-webster.com/dictionary/hypothesis

I clearly don’t think your opinions match the definition found in merriam webster… or else I wouldn’t have asked.

You don't think his comment is "an assumption put forward for the purposes of discussion"? That seems a fairly low and generic bar for a comment to reach...

Re: Reality has a surprising amount of detail (2017)

#202
post #178
post #44

Related. Others? Reality has a surprising amount of detail (2017) - https://news.ycombinator.com/item?id=38407851 - Nov 2023 (136 comments) Reality has a surprising amount of detail - https://news.ycombinator.com/item?id=36309597 - June 2023 (1 comment) Reality has a surprising amount of detail (2017) - https://news.ycombinator.com/item?id=29429385 - Dec 2021 (118 comments) Reality has a surprising amount of detail (…

What happened to the post from a couple of days ago?

Which post do you have in mind?

Re: Reality has a surprising amount of detail (2017)

#203

Earlier quoted context omitted.

"Results may vary" is not an acceptable methodology for the US Government, when millions of lives are potentially at stake. Ed: among the ways millions of lives could be lost: losing control of our nuclear arsenal or nuclear materials due to haphazardly firing people responsible for maintaining them. Bungling the response to the next pandemic, due to haphazardly firing people, cutting science funding and deleting inc…

> Bungling the response to the next pandemic, due to haphazardly firing people, cutting science funding and deleting inconvenient data. That’s possible, however, it’s possible it’ll give a chance to remove autocrats who have suppressed the scientific method in favor of their prevailing opinions or preferences. There will be a painful period but it could rejuvenate the systems.

But consider, what if we rejuvenated our health infrastructure in a way that isn't blazingly incompetent? Suppose you learned enough about the systems currently being smashed to specifically fire the "autocrats" and leave the competent people? Are you seeing where the importance of detail comes in?

Re: Reality has a surprising amount of detail (2017)

#204

And this is one of the main utilitarian arguments for diversity in teams. If everybody has the same socio-cultural background, it's harder to leave the frame.

It's a sound argument. The argument that culturally homogeneous teams perform better due to more efficient communication (more is "already understood" at the outset, so there's less need to communicate explicitly, and fewer misunderstandings) is also sound. So from a purely team-performance-maximising perspective, the question is: Which coefficient is higher? (More generally: What level of mixture is optimal?)

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Re: Reality has a surprising amount of detail (2017)

#205
post #119

Earlier quoted context omitted.

Where's the proof that humans of opposite sex are intrinsically attracted to each other? I can't see it.

Exactly. I got no clue who taught most of the billions of people this is the way.

There is this thing called culture, don't know if you heard about it.

Re: Reality has a surprising amount of detail (2017)

#206
post #49

This is what the DOGE guys don’t understand: even if it seems you can easily replace something, you will find out that the devil is in the detail.

This is what the critics fail to understand: this all should be documented because it's public work. There should be no "secret sauce" in the bureaucracy nor should the process be so abstract and complex that the hidden details are the most pertinent ones. Government should not involve arcane wizardry nor should imputed mastery of it be held as an excuse to prevent it's modification to meet the will of the voters.

It also should not be so complicated that it's impossible to audit.

Re: Reality has a surprising amount of detail (2017)

#207
post #128

Earlier quoted context omitted.

I don't actually know, but I'd wager a lot that it's the graphics rather than the physics which causes the game to be slow. Generally the expensive thing in video games is rendering. Computing the next world state is generally relatively cheap, especially if we're talking about a confined area with a very small number of rigid bodies (the ball, flippers, bumpers). A pinball game like Pinball FX that's rendering a 3d…

Especially with such a small number of rigid bodies to worry about. The literal only thing that has to collide with anything else is the pinball itself, unless we're talking about a pretty weird pinball machine.

Of course, but that rigid pinball has speeds in three directions, rotations along many axes, friction might change on different surfaces in the simulated machine, the ball can jump, bounce and slip depending on how it's rotating and if there is more than one ball in play then something like a bumper can "fully" hit one ball but merely graze another one. Pinball machines are a prime example of what the article talks about: a basic simulation is indeed quite simple. A good simulation rapidly spirals down into the most obscure details.

Re: Reality has a surprising amount of detail (2017)

#208
post #131

Earlier quoted context omitted.

Have you seen the virtual pinball tables that emulate depth by tracking your head? It's a great effect

I have not, that sounds pretty cool. That might make the machines more fun, or at least feel more realistic. I think having something more or less like a rumble feature would do a lot too. Even if you just had a solenoid that thumps when hitting a bumper would make it feel a lot more realistic.

This illustrates the concept pretty well. https://youtu.be/DoSLmAaRJ80?si=Mt94YNzBtLZzPDmh

Re: Reality has a surprising amount of detail (2017)

#209
post #151

Earlier quoted context omitted.

Here's a gif on how a real pinball bumper works: https://www.reddit.com/r/mechanical_gifs/comments/aflmj7/how... It's not really a rigid body, it's a dynamic component that squeezes the ball.

Nah. This is easily emulated with an impulse force. The outcome a nanosecond after the ball leaves the bumper is just an impulse. Users can't tell the difference.

So confident and so wrong. The microphysics of pinball are critical to the game, consider the live catch (https://www.youtube.com/watch?v=wjALq96jpJQ). It's impossible to see with the naked eye, but the reason it works is because the flipper is so powerful that flipper bounces off the stop. That combined with a milimeter or so of give in the rubber allows a live catch. The timing is difficult, but not THAT difficult. And this is just one specific maneuver that relies on nuances of the physical properties of actual machines, and being able to read those tiny subtleties is what makes the difference between the best players.

Pinball simulation has come a long way, but it still feels very different from the real thing.

Re: Reality has a surprising amount of detail (2017)

#210
post #167
post #126

Earlier quoted context omitted.

I'd be cautious about the word "fractal" misleading us into looking for a scale-spanning pattern that dictates both large and small details simultaneously. Sometimes a cigar is just a cigar, and fine features occur for different reasons than coarse features.

https://youtube.com/watch?v=gB9n2gHsHN4 (3B1B: Fractals are typically not self-similar)

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