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I would think that, at the very least, [science-based] is implied by this site's scope and doesn't add anything.  (I didn't think to ask for it to be stripped on import, but presumably it's not hard to kill.)  On WB I believe the rule was that [science-based] shouldn't be the *only* tag on a question; is that correct?  I don't want to create a bunch of untagged questions by removing it; I don't know if that's an issue.

I suspect what I just said applies to [reality-check] too, but I don't know that body of questions as well.