Hey guys, I just posted this in the theories section, apparently i missed this thread.

For the scene you guys are talking about, check out:

(New so forum won't let me embed, search youtube for: 'Jack Visits Hurley in the Mental Institution')

"He made me write it down so that I wouldn't mess it up" (indicating perhaps that if understood out of context and even slightly misquoted, could have devastating effects?)
"You aren't supposed to raise him Jack..." and "you think he means Aaron?" Almost like the directors want you to be able to look back and see them question it... as if Aaron isn't who the message was obviously referring to. He also says "Charlie also said someone's going to be visiting you too. Soon." probably referring either to Locke or Ben... setting up a great lookback of this theory is true (keep reading to see where I'm going with this )

Another scene that supports this theory:
(New so forum won't let me embed, search youtube for: 'Claire tells Kate not to bring him back')

"You can't bring him back Kate, DON'T YOU DARE BRING HIM BACK"

So here's the theory... What if HIM isn't Aaron. What if HIM is Locke... Totally changes the context of those warnings... Read them again with "him" being Locke? "You aren't supposed to raise him, Jack". The end of season for concludes with Ben suggesting they have to bring Locke back to the island, almost suggesting they could resurrect him... or 'raise' him from the dead.

"You can't bring him back Kate, DON'T YOU DARE BRING HIM BACK" - What if that was intended as a warning not to bring Locke back, seeing as how they all would need to return together, she would technically be a part of the group bringing him back, and we already heard that chaos broke out on the island when they left and Locke was left behind.

Thanks for reading!