does anyone know wth this means In the original script Marty s playing rock and roll at the dance caused a riot which had to be broken up by police This combined with Marty accidentally tipping Doc off to the secret ingredient that made the time machine work Coca Cola caused history to change When Marty got back to the 1980s he found that it was now the 1950s conception of that decade with air cars and what not all invented by Doc Brown and running on Coca Cola Marty also discovers that rock and roll was never invented and he dedicates himself to starting the delayed cultural revolution Meanwhile his dad digs out the newspaper from the day after the dance and sees his son in the picture of the riot It s poorly worded and I have no clue what 1950s conception of that decade with air cars and what not yadayada is supposed to mean