Mainstream
Propell, propell, propell your craft
quietly down the aquatic solution
estatically, estatically, estatically, estatically
existance is but an illusion!
Ok, I haven't ever really analyzed the movies and haven't seen II in forever, but here goes.
Fine. The world goes along this 'mainstream' because that's the path 'reality' follows for that universe. But it isn't unchangable, and it isn't isolated. But fucking abouit it differnt timestreams, Doc and Marty jimmierigged the universe to their own purposes... until the end of III where Doc reveals the whole time (heh) it's been basically a block-time universe and nothing really matters a whole bunch what you do. Thus the train.
