Back to the Future PLOT HOLE: Marty McFly should be called Dave after returning to 1985

They continued: “But in the new timeline he should have an older brother named Marty, and he should be named Dave.

“When he asked about them [to go] easy on their future kid, he subconsciously planted the idea of having kids in the minds of his parents.

“And followed up with [how] his mom [liked] his name would have linked the two ideas together.

“So when they have their first son it would be more likely that they would name him after their mysterious friend who set them up and instilled confidence in George to follow his dreams, than save that name for your third kid.”