Not a monkey, but lots of physicists have had bad answers to these in the past IMO because the answers aren't just from a series of calculations.

Quote Originally Posted by acg123 View Post
if no then this is clearly the reason we haven't been enslaved by aliens.
We haven't been enslaved by aliens because an intra-galactic dominating lifeform would have to be so advanced that it has no incentive to enslave humans. It would have no incentive to even come near Earth. It would likely just be a network of machines that get all energy and material from a small amount of sources: a sun, asteroids, or even just quantum factories (probably quantum factories)

The other reason is that the sheer magnitude of spacetime and energy needs combined with the relative youth of all possible life determines that there just aren't any intra-galactic empires possible

Question 2:
is it possible our planet was "selected" and seeded by us from another "solar system" where our bodies would not survive the travel time, but single cell organisms would as would DNA?
I think it is technically possible, but in order to get past the magnitude of the task, the aliens would have to basically be God. You don't hit a bullseye across a galaxy. And even if you could, you don't want to. When you're that advanced, you don't think it's a good idea to spread obsolete seed to a potential host candidate that will arrive in like a hundred thousand years