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Managing time when time doesn't exist

(multiverseemployeehandbook.com)
178 points TMEHpodcast | 3 comments | | HN request time: 0.247s | source
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TMEHpodcast ◴[] No.44373256[source]
OP here. This is a blog post for a science comedy podcast, so the science is accurate but delivered with about 47% more workplace humour than you'd find in Physical Review Letters.

The core premise is based on real, cutting-edge physics research, though it's still an active area of debate.

The Page-Wootters mechanism (proposed in 1983, experimentally validated by Moreva et al. in 2013-2015) does show that time can emerge from quantum entanglement between subsystems. In their experiments, time exists for observers inside entangled quantum systems but not for external observers viewing the whole system.

The Wheeler-DeWitt equation really does lack a time parameter, creating what physicists call the "Problem of Time" in quantum gravity. And there is genuine convergence across string theory, loop quantum gravity, and causal set theory toward "emergent spacetime" models.

However, this doesn't mean time is "fake", it suggests time might be like temperature, which is real and measurable but emerges from more fundamental processes (molecular motion). The research indicates time could emerge from quantum information rather than being a fundamental dimension.

The 2023-2025 research I mentioned (cosmological time dilation measurements, atomic clock advances) is real, though the interpretation that "consciousness creates time" is more speculative than the underlying quantum mechanics. So yes, "emergent time" is a serious scientific hypothesis with experimental support, but science is still figuring out exactly what that means for our understanding of reality.

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GTP ◴[] No.44378369[source]
Great piece! However, I think there's something you literally got "upside-down": AFAIK it's our head that ages slower than our feet, due to the face that it is moving faster.
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1. TMEHpodcast ◴[] No.44378453[source]
Actually no. Gravity is slightly weaker at your head than at your feet (because it’s farther from Earth’s center). According to general relativity, clocks tick faster in weaker gravity. The effect of your head being higher up outweighs the fact that it’s moving slightly faster due to Earth’s rotation.

If you’re standing up, your head experiences more time than your feet, by about 6.2 nanoseconds per year. So your brain is slightly older than your toes.

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3. GTP ◴[] No.44385351[source]
Interesting, I didn't know about the time change due to gravity. Thank you for the explanation.