I believe that some improvements in rationality have negative consequences which outweigh their positive ones.
That said, it might be easy to make too much of this. I agree that, on average, marginal improvements in rationality lead to far superior outcomes for individuals and society.
So, you believe that "It's dangerous to be half a Rationalist". Literally part of the sequences by now. A good thought but probably shared by many here by now :)
What do you believe that most people on this site don't?
I'm especially looking for things that you wouldn't even mention if someone wasn't explicitly asking for them. Stuff you're not even comfortable writing under your own name. Making a one-shot account here is very easy, go ahead and do that if you don't want to tarnish your image.
I think a big problem with a "community" dedicated to being less wrong is that it will make people more concerned about APPEARING less wrong. The biggest part of my intellectual journey so far has been the acquisition of new and startling knowledge, and that knowledge doesn't seem likely to turn up here in the conditions that currently exist.
So please, tell me the crazy things you're otherwise afraid to say. I want to know them, because they might be true.