MentalFloss.com talked to Back to the Future co-writer/co-creator Bob Gale. Here’s what the writer had to say about what he and Robert Zemeckis came up with to explain how Marty and Doc got together…
Okay, from the horse’s mouth (yes, I’m the horse — er, co-writer, co-creator): We never explained it in the movie. But the history of the characters that Bob Zemeckis and I created is this…
For years, Marty was told that Doc Brown was dangerous, a crackpot, a lunatic. So, being a red-blooded American teenage boy, age 13 or 14, he decided to find out just why this guy was so dangerous. Marty snuck into Doc’s lab, and was fascinated by all the cool stuff that was there. when Doc found him there, he was delighted to find that Marty thought he was cool and accepted him for what he was. Both of them were the black sheep in their respective environments. Doc gave Marty a part-time job to help with experiments, tend to the lab, tend to the dog, etc.
And that’s the origin of their relationship.
— Bob Gale














Did the meet in the Future or the Past
Great delivery. Solid arguments. Keep up the good work.
Wow! I have always wondered this very thing. Doc and Marty do have an interesting relationship
pretty much what I would’ve expected and accepted, nothing fancy. would’ve been cool if they at least tried to shoot this scene first but decided left it out of the final cut.