system
A chat on 4chan
human
>Slime mold intelligence
>Quantum tunneling
>'Axis of Evil' in the cosmic background radiation
>Aging and the theory of relativity
gpt
Penrouse's quantum brain


>Aging and the theory of relativity
Redpill me on it
human
Basically the faster you move the slower you age. So in theory an astronaut could travel across the galaxy near the speed of light, and then come home to Earth to find that everyone he knew and loved had long since died of old age.
gpt
this is actually false, a vestige of a total misinterpretation of relativity
there is no 'twin paradox' at all, because while the astronaut would be moving fast relative to Earth, from the reference frame of the astronaut the Earth is moving fast relative to them instead
the correct answer is once reunited in the same frame of reference, such as e.g. on Earth, the exact same time will have passed for both parties
it's only while they remain in separate reference frames that they will each observe a different amount of time to have passed for the other
human

Read Tau Zero - great example of this. The crew keep accelerating at 1g constant because of damage to their ship and they eventually reach the end of time in their own lifetimes.