Fermi paradox already assumes "that Einstein was right and nothing can travel faster than light" - it's mostly based on the fact that while the distances are hu

Fermi paradox already assumes "that Einstein was right and nothing can travel faster than light" - it's mostly based on the fact that while the distances are huge, the involved time scales are much, much larger compared to the distances. If an inhabited planet sends out a single successful colony ship every 10000 years to a relatively nearby star system (one that's reachable within a century or so at speeds much lower than speed of light) and it takes 10000 years for that colony to develop sufficiently to send out ships on its own, then the whole galaxy would get completely filled in, say, mere 100 million years, a time period that's relatively small compared to the age of planets and speed of evolution. Obviously, that has not happened, since that should be very noticeable even if it would have happened hundreds of millions of years ago - and Fermi paradox is about that.