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I'm definitely into the "it's an emergent phenomena" camp. I think it's inherently relational, as that's a more efficient way to encode geometry rather than sp

I'm definitely into the "it's an emergent phenomena" camp. I think it's inherently relational, as that's a more efficient way to encode geometry rather than space itself being a quantized "thing". Afaik this theory is the "leading"/imho most promising theory of "quantum gravity", that being the "gravity = entanglement" conjecture and the related ideas of "Complexity= action/volume/whatever" that susskind and many others have been developing for the past 20 so years. All that said I'm nowhere near a physicist and am probably just spewing a total misunderstanding of the situation from my armchair. That said, I've been incessantly watching lectures in this space to try to beat an understanding into my dumb dumb brain because it's super, super fucking cool. - https://youtu.be/6_7aKoEx_kk https://youtu.be/6_7aKoEx_kk - https://youtu.be/6OpAreb779U https://youtu.be/6OpAreb779U - https://youtu.be/9crggox5rbc https://youtu.be/9crggox5rbc - https://youtu.be/OBPpRqxY8Uw https://youtu.be/OBPpRqxY8Uw - https://youtube.com/@isqg423 https://youtube.com/@isqg423 I'm also fascinated by the idea of phase transitions, which seems to be how the laws of physics have "evolved" so far. It's crazy how much quantum computation is coming into play with this stuff, ex last year's Nobel prize with the bell inequality. That said I'm sure being a programmer I'm biased to think the universe is inherently computation/math.

EvgeniyZh 3y ago
There are some pretty strict limitations on emergent phenomena, like Weinberg–Witten theorem. It doesn't rule out emergence of gravity but it makes it less likely
- hughesjj 3y ago
  To my understanding that's only if you're trying to quantize the graviton as an emergent particle. I'm personally of the belief that spacetime itself is an emergent phenomena https://en.m.wikipedia.org/wiki/Composite_gravity https://en.m.wikipedia.org/wiki/Composite_gravity
ethn 3y ago
It's not relational. There's several rigorous proofs against Spinoza's relational theory. Namely that of Kant and Einstein: "even if space is composed of nothing but relations between observers and events, it would be conceptually possible for all observers to agree on their measurements, whereas relativity implies they will disagree" [0] 0: https://en.wikipedia.org/wiki/Relational_space https://en.wikipedia.org/wiki/Relational_space
- ImHereToVote 3y ago
  Unless one of the observers accelerates for some reason. Now his observation is privileged.
  - lgas 3y ago
    Doesn't relativity mean there's no difference between that observer accelerating in one direction and everything else accelerating in the opposite direction? So wouldn't everyone's observation be equally privileged? I'm asking honestly as am (obviously) not a physicist.
    - ImHereToVote 3y ago
      You would think so, but no. There is something magical about acceleration, specifically how much spacetime you increasingly or decreasingly traverse.

EvgeniyZh 3y ago

There are some pretty strict limitations on emergent phenomena, like Weinberg–Witten theorem. It doesn't rule out emergence of gravity but it makes it less likely

hughesjj 3y ago
To my understanding that's only if you're trying to quantize the graviton as an emergent particle. I'm personally of the belief that spacetime itself is an emergent phenomena https://en.m.wikipedia.org/wiki/Composite_gravity https://en.m.wikipedia.org/wiki/Composite_gravity

ethn 3y ago

It's not relational. There's several rigorous proofs against Spinoza's relational theory. Namely that of Kant and Einstein: "even if space is composed of nothing but relations between observers and events, it would be conceptually possible for all observers to agree on their measurements, whereas relativity implies they will disagree" [0] 0: https://en.wikipedia.org/wiki/Relational_space https://en.wikipedia.org/wiki/Relational_space

ImHereToVote 3y ago
Unless one of the observers accelerates for some reason. Now his observation is privileged.
- lgas 3y ago
  Doesn't relativity mean there's no difference between that observer accelerating in one direction and everything else accelerating in the opposite direction? So wouldn't everyone's observation be equally privileged? I'm asking honestly as am (obviously) not a physicist.
  - ImHereToVote 3y ago
    You would think so, but no. There is something magical about acceleration, specifically how much spacetime you increasingly or decreasingly traverse.