I really liked the Synthesis option. Just imagine the Knowledge of all the galactic civilizations before us available to everyone. Would we still fight among ourselves, for Resources? Will anyone even need to eat, as one can just make some of his cells as solar cells, and directly absorb the energy. Even now, if someone has a bad organ, he will happily accept an artificial but fully functioning organ. Imagine all your organs are an organic-synthetic hybrid. You get the best of both worlds. Won’t that make everyone in the galaxy immortal? Basically, all human civilization at this point is like, what 2000-5000 years old? Imagine what multiple 50,000 years old civilizations’ knowledge will do to us?