So last time I talked about the fact that a large part of irrationality is caused by flinching away from unpleasant thoughts. This seems to cover the entirety of cases that make you want to throw up your arms and scream "You're being IRRATIONAL!!!"
However, if you define rationality as the skill of arriving at true beliefs, the skill of systematic winning, or as any other meta-intelligence like thing, then this isn't the whole story.
You might systematically get the wrong answer simply because you've never heard of Bayes' Theorem. You might make poor decisions because you don't know to take into account scope insensitivity. And if so, you're faring poorly on epistemically and instrumentally rationality - even without flinching from thoughts.
However, if there's nothing to flinch from and you have some minimal intelligence needed to bootstrap up, it seems likely that you'll eventually learn about Bayes' Theorem and scope insensitivity.
Having the emotional skills of being unconstrained by ugh fields seems to point you into the rationality attractor with much higher probability than someone with a few rationality techniques and the clothes of rationality.
Technical rationality is pretty cool stuff. I get a lot of mileage out of it, and I still giggle to myself every time I explicitly use Bayes' Theorem to make correct predictions on seemingly little evidence. However, there's a lot of shit to learn, and I'm not sure exactly how dense it is with good stuff - I certainly don't regret learning what I have, but I don't think I can recommend it all to everyone.
I'm also not sure the relative value of being up to date on understanding the techniques of rationality compared to the value of simply having the habit of being unswayed by ugh-fields. The latter seems pretty damn important - even on the margin - even for people good at rationality. That's certainly where I see my own lowest hanging fruit.
Flinching seems to determine whether you can learn new techniques and use the ones you got - maybe us aspiring rationalists should shift our focus?