system
Given the following post, respond as if you're commenting on Reddit:
human
Luke and Leia are switched at birth. He becomes Prince of Alderaan, she's raised on Tatooine by the Lars. How does history change?
gpt
Leia has a much harder time on the farm than Luke. She's a lot more forceful and brash, and given the backwards nature of Tatooine, is probably discouraged from doing a lot of "male" things like repairing droids, shooting womp rats, and piloting. Her reaction to this is probably not to learn her place, but to rebel - hard. She runs away at fifteen years old, and thanks to her powerful Force sensitivity, becomes a hot-headed smuggling pilot. Obi-wan spends quite a bit of time trying to chase her down.

Meanwhile, Luke is learning diplomacy on Alderaan. His more reserved nature more perfectly matches with royal society, and he becomes a diplomatic force to be reckoned with, and later a senator at a very young age. Though never quite as daring as Leia, he still joins up with the Rebel alliance due to their treatment of non-Humans.

Events begin wildly diverging when the rebellion obtains the plans for the Death Star. Kenobi is chasing down the renegade Leia rather than on Tatooine, and so it's unclear where Luke's "diplomatic mission" would end up taking him. It's likely that he would be captured by Darth Vader, who would reveal his heritage to him and attempt to bring him over to the Dark Side without all of the playing around.

Kenobi catches up with Leia somewhere outside of Kashyyyk. She's hooked up with a Wookie and a smuggler by the name of Han Solo, but after Kenobi explains matter to her and tells her that he life is in danger, she explains that working for the Rebellion doesn't really interest her - unless she can get something out of it. Kenobi agrees to train her in the ways of the Jedi, and the other members of the *Millenium Falcon* reluctantly come along.