10 Ways Star Wars: The Last Jedi Was Almost Completely Different
8. Rey's Most Important Lesson
One of the biggest complaints about The Last Jedi comes from the post-training Rey not really feeling all the more accomplished or ready to take on the world as before, and though you can argue that's the point (learning the lessons of failure and all that), there was a suitably meaningful "final lesson" planned and shot.
Framed around a fleet of boats arriving on the distant side of Ahch-To, Luke tells Rey that they're a bandit raiding party who routinely return to the island. He states that attacking them will only result in greater repercussions later (connoting Obi-Wan's "greater numbers" line), but immediately Rey sprints to where some smoke is now billowing, wanting to help.
This scene of her running is what we saw WAY back when production first started - it was in there that early.
Instead, she arrives to find... an actual party, comprising the Caretakers, Chewie and R2-D2.
Annoyed, she returns to Luke, who apologises and tells her that this was also a lesson: The galaxy needs action and goodwill, not the rumination of an ancient faith that only intervenes to maintain this nebulous concept of "balance".
The scene ends with Rey crying at his deception, and literally calling out Luke - "That old legend of Luke Skywalker that you hate so much, I believed in it" - giving her more motivation to leave the island.
Ultimately this was deemed a bit too much for the whole "Luke isn't who you think" idea, being another slap in the face to fans who'd stuck by the franchise all these years, and was dropped.