: I want to get this sequel/prequel thing out of the way. Halo must take place
: well after the launch of the marathon, in Halo humans have faster then
: light tech, but during marathon they did not. I dont remember what the
: dates are, so other people will have to fill in the blanks.
The Marathon's flight to Tau Ceti was three hundred years long. That's three hundred years of isolation from the rest of humanity. They could have developed FTL travel during that period of time... likely, they have quite a few AIs of their own.