[naivehs]

There is probably a better chance if we can become cyborgs fast enough.

Another possibility is that everyone, or better everything that has ever been, can be ressurected providing Heisenberg was not completely right. It seems reasonable that sometime along our civilization we will find a way to trace back and reconstruct every part of history.

Most importantly, when we do eventually meet an alien, always remember to count in radians.

[yters]

Orson Card's "Redemption of Columbus" is based on this idea. They figure out how to calculate a change in history that will create a better future. This leaves the possibility open that technology can reach a state where the meta-timeline can be retraced and everyone resurrected.