NYChase718
Veteran
Also, that theory Doc had about seeing yourself at another point in time. LIES. Biff had spent a whole damn afternoon hanging out with his young self, gave him the almanac.
also, if he took the time machine from one version of the future, truth is Doc and Marty wouldn’t have ever been able to get the time machine back because if Biff altered the space time continuum, after he dropped the almanac off, he would have traveled ALL the way to the future 2015 with him on top of the world.
Instead, they had him return to the original 2015, just so Marty and Doc could travel back. They should have been stranded technically
He just happend to know how to operate it and nice enough to return it