I just watched the OT again (for the 50+ time) and I thought of a solution to the "Luke's short training" discussion.
Because the Millennium Falcon didn't have hyperdrive, it took 4 months for them to fly to Bespin. The actual amount of time it took is never discussed and there's no external reference to dictate how long the flight took (in the movie canon anyway). Han even says "Bespin. It's pretty far, but I think we can make it."
That means for 4 months straight, Luke was being trained in the force by the greatest Jedi trainer who ever lived. Day and Night.
Totally a random number. Since there are no specifics, I figure if it was 4 months, people might start to think, "Ok, I could see Luke becoming a fully trained Jedi in 4 months" as opposed to a few days or weeks.
Luke wasn't fully trained at that point though, it wasn't until after he returned that Yoda said the only thing to do was confront Vader, so clearly time had passed enough between that and then for Luke to be ready.
Well "fully trained" was something implied in the OT a lot, but does't really mean much post PT, as training continues well beyond becoming a Knight. So no young/newly appointed Knight is ever "fully" trained.
The organized ranking structure and youth-long apprenticeship is all stuff from after 1983. All stuff after TPM. We've had 20 years of people seeing it all concurrently and then forcing a retrospective critique of the OT for not aligning with what a future version of the franchise would look like.
So I guess the OT just didn't have the clairvoyance to find the Rebels' hidden fort--
__________________ Recently Produced and Distributed Young but High-Ranking Political Figure of Royal Ancestry within the Modern American Town Affectionately Referred To as Bel-Air.