•Earth life started fast, for 500MY exp grow body/brain, big brains, humans w/in ~20MY.
•At current growth
rates, fill solar system in
< 10KY. Could then fill galaxy in < 10MY.
•Interstellar travel
then seems tech/wealth feasible.
•~1011 gal./univ., 1011 star/gal., just
need one trip.
•Universe 13BY, Earth
4BY.
•Any star in galaxy w/ 10MY lead here by now.
•Ancient advanced
economies dominate universe?