6 ms·
The time scale is so vast that whatever happens, with whatever definition of "optimism", it's hard to imagine our descendents to recognize themselves into us.
by ithkuil 5y ago
The time scale is so vast that whatever happens, with whatever definition of "optimism", it's hard to imagine our descendents to recognize themselves into us.
There is un circumstance: that a group of humans today (or in the near future) just time "travels in the future" (e.g. by moving at relativistic speeds, etc, while in cryogenic sleep or whatever) and just happen to witness the late universe without the time actually ticking for them. In that (unlikely) case the same effect that would prevent the species from diverging is the same that would prevent them from getting extinct (not enough time)
- rbanffy 5y ago> moving at relativistic speeds, etc, while in cryogenic sleep or whatever There’s an interesting way to get to relativistic speeds - to get close enough to a supermassive black hole, steal enough momentum so you get very close to c, then, a subjective week later, you do the same around another black hole in a different galactic core to shed your momentum and get back to a manageable speed. An intergalactic civilisation would use supermassive black holes as train stations.