~~~~ we've come up with a _very tiny handful_ of ways to do time travel.
one of the ways to _simulate reality in a reversibly deterministic manner, fully predict the future, and run it backwards_.
is this sufficient for telling a friend goodbye after they left?
only if your friend is within the simulation, and you can control the simulation.
ohhhh and if the friend is also outside the simulation, it only works inside the simulation. outside the simulation it is more a complex and extremely obsessive expression of regret.
but some of the ways do work in reality! uhhhhhhhh _seem like they might_ work in reality if things that don't happen did happen (like mapping and generating life).
one of--
prerequisites for natural time travel: - understand time as nonlinear and bidirectional in a deep and thorough manner - encrypt a complete descrip--