If conventional expansion into the galaxy occurs by intelligent life, we should see signs of other intelligent life by now. That is the basis of the Fermi paradox. I'm in the camp that the explanation of the Fermi paradox lies in some natural maturation of intelligence that eschews conventional expansion. I don't know if a superintelligence that evolves may go to another dimension or what, but something big happens that makes expansion into our "known" physical universe irrelevant.

When you think about our "evolution" of artificial intelligence as well as the conjunction of our ability to self-evolve that is extremely powerful. When you add the factor of the evolution of our cooperation as a superorganism, then the sum may indeed be much greater than the parts. The individual human even one evolved well past where we are now, will be as insignificant as a cell in our bodies to the superorganism that it is a part of.

At what point is our intelligence projected into energy patterns that live within/and or without both virtual universes and other dimensions? We can speculate but there is no way to know what path lies ahead.