Much of the practice of Scientology is based on theater exercises designed to do exactly the same thing as LessWrong. The similarities are unsurprising.
Personally, I have yet to see any evidence suggesting rationality is even desirable. The most irrational people, selfless, story-oriented, tolerante of multiple conflicting subjective "realities", interested in the feelings and passions of people around them no matter what they are, are also those I most enjoy interacting with. Everyone I have met who strives for rationality is at least a bit of a prick.
Personally, I have yet to see any evidence suggesting rationality is even desirable. The most irrational people, selfless, story-oriented, tolerante of multiple conflicting subjective "realities", interested in the feelings and passions of people around them no matter what they are, are also those I most enjoy interacting with. Everyone I have met who strives for rationality is at least a bit of a prick.