At this point, you assume that stopping Old Young Marty from injuring his hand, thereby making his family hella pathetic, is going to become one of the objectives of the movie, but it’s not. In fact, as far as I noticed, it’s never mentioned again. I guess, once Marty and Doc fix the whole Rich Biff situation, the McFly family is just left to wallow in mediocrity forevermore?
Nope, this plotline wraps up in BttF3
