system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Why does Obi-Wan's force ghost sit on a log

In Return of the Jedi, after rescuing Han, Luke travels to Degobah to confront Yoda with the revelation of Darth Vader's true identity. They talk, Yoda dies, and Luke goes outside to meet Obi-Wan's force ghost. At some point during their conversation, the slain jedi's force manifestation decides to rest its legs and it takes a seat on a fallen tree, and throughout the interaction acts more like a shiny, blue man rather than an incorporeal phantom. This is at odds with his depiction in Empire Strikes Back, when he's introduced to a weary Luke in the midst of a deadly blizzard, and is -- at least initially -- portrayed as more mirage than man. Do force ghosts interact with the world in a physical way? Do they feel the type of exhaustion or weariness that would incline a person, or force ghost, to take a load off?
gpt
Force of habit. And no, the pun wasn’t intentional.

They interact with the world through the Force but they still have all their habits from life. Kenobi just sat down when discussing a rather weighty subject because he’s used to it.