What makes you think SA's ability to write interesting posts has anything todo with rationality? He's mentioned that at least one member of his family is very talented, and that he won writing contests when he was a child (and so, before he encountered LW).
In general, in many ways creativity is correlated with insanity, not rationality.
In general, in many ways creativity is correlated with insanity, not rationality.
Definition and evidence? What do you mean by "creativity" in this statement and why do you believe it's true? (If by "insanity" you mean something other than mental illness, what do you mean?)
A lot of Less Wrong frames becoming more rational in terms of correcting biases. When Scott Alexander is asked how he does it, he doesn't seem to actually have an answer-- if I recall correctly, he's just said that all he's got in his life is his job, his girlfriend, and his blog, which doesn't begin to explain his remarkable flow of interesting posts.
It's a good thing to have fewer and weaker biases, but it's better if de-biasing can be applied to new ideas which have a good chance of paying off.
Is there LW material about creativity that I'm not remembering? Any recommendations for information about creativity elsewhere? I'm especially interested in material which you've seen help you or other people become more creative, as distinct from material which has been plausible and/or fun to read.
Edited to add: While I think this is a generally applicable topic, I also have a local interest. I'm fond of LW, but it seems to be in a doldrums, and at least part of the cause is a lack of interesting new material.