And I said, "I channel the explaining bug into character. If it's sidetracked me from story, I think, 'All right, who believes that? And what does it do to their actions that they do believe it?'"
This is, of course, in the situation where trying to come up with lots of explanations for all the details of your story is counterproductive. Sometimes it's productive. Those times -- I just go with them.
In case anybody else might find that thought useful, I guess.