My view of superstition is simply this; if you believe something flatly contradicted by the evidence of both scientific inquiry elementary logic and your own eyes, that belief is superstitious in character.
You might want to replace "superstitious" with "obviously wrong", then, to prevent confusion.
People want to tell everything instead of telling the best 15 words. They want to learn everything instead of the best 15 words. In this thread, instead post the best 15-words from a book you've read recently (or anything else). It has to stand on its own. It's not a summary, the whole value needs to be contained in those words.
I'll start in the comments below.
(Voted by the Schelling study group as the best exercise of the meeting.)