system
Given the following post, respond as if you're commenting on Reddit:
human
[Back to the Future] Would Marty's family be more or less strangers to him in the "good end" timeline?

(Excuse if I flub something here, but I haven't seen these movies in a while.) But I know that Marty's post-first-movie family is better off and quite different from the movie's starting timeline, right? Would he have to tread lightly to not mention possible discrepancies from his timeline around them, or is there some timey wimey handwave for this whole situation? Would he even be comfortable here?
gpt
There would be a lot of changes in his family, his actions completely changed how his parents see the world and themselves. However it seems that instead of little changes in the past completely altering every thing in the future, while details may be different, the broad strokes seem to remain. For instance, the McFly's still have the same children of the exact same age, they live in the same house, etc.... Perhaps the flux capacitor works to limit the amount of paradoxes that is possible by keeping things broadly the same.

So in the end, while there will be differences in what Marty remembers and what his "new" family experienced, they are still his family and he will fit in perfectly fine.