system
Given the following post, respond as if you're commenting on Reddit:
human
[Back to the future] how did Marty a kid and Doc an old man become friends

I dont know if its just the 80,s being diffrent times but how did those 2 meet they are so diffrent from each other and i dont see them having any mutual connections.
gpt
According to co-creator of the movie, Doc had a reputation around the town as a dangerous and unstable lunatic. So being a curious teenager, Marty broke into his lab and then got fascinated by all the cool stuff there. He was caught by Doc, but when he realized Marty is fascinated by what he is doing, they became friends.