Unfortunately for this line of argument, there are a whole lot of things one can say that may cause personal affronts, some of which are essential as part of some debates and some of which may even express factual truths. If they are generalities, they might not even be disprovable by examples of individual humans (such as statements that some class of humans is more likely to have lower scores on IQ tests).
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.