This is more of a light introduction to rationality piece, not really intended to inform most users of LessWrong - but I think some people may enjoy it, and others may be able to provide useful feedback.
That said, I think it's useful to have a more diverse set of introduction to rationality posts, both to share with others, and to promote separately, since they will appeal to different audiences. I'd love to hear feedback about where people think it could be improved, or if people think it is or is not useful!
I'm afraid I don't really have any useful feedback, but I did enjoy it. If nothing else it reminded me that I used to love crosswords and haven't done any in yonks, so thanks for that!
I think it's useful to have a more diverse set of introduction to rationality posts
Agreed. As long as they're not inaccurate or misleading, having a variety of introductory articles is definitely valuable. Though I think I already had a decent beginner level grasp of Bayes when I read this, the crossword theme suggested "think in pencil" as a rather pleasing shorthand for the importance of resisting certainty and undue attachment to beliefs.