system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Chewbacca was flying spaceships over a century before Han Solo was even born. Why is he the copilot?

His number of flight hours must be insane. His experience is so incredibly vast due to his long lifespan that it probably makes him one of the best pilots in the galaxy. (On that note, Yoda is probably the best, with over 800 years of flight experience.) Shouldn't Chewie, the grizzled veteran, be the pilot-in-command rather than the fresh-out-of-the-military rookie?
gpt
Han owns the Falcon, he gets to pick who's the pilot and who's the co-pilot, and well, you know Han.  

Also, there's more to piloting skill than raw flight hours.  It's entirely possible that Han is actually the better pilot.