The speed of bootstrapping would be greatly increased by the knowledge we have. Even a very serious nuclear war would leave significant caches of scientific and

The speed of bootstrapping would be greatly increased by the knowledge we have. Even a very serious nuclear war would leave significant caches of scientific and technological knowledge. Galactic timescales are so large that we could easily afford to spend thousands of years rebooting, even do so many times. Of course if there's some technology that is even more damaging (and easier to make) than nuclear weapons, we might have a good great filter candidate.