<i>Stupidity is not an insult. It's an attribute</i><p>Of course it's an attribute, just like ugliness. Yet calling someone stupid or ugly most often is an insult. It doesn't matter whether it's accurate or not, whether it's about an attribute or something else: a statement is an insult if it's perceived as such.<p><i>What you call "stupidity" is often just a lack of curiousity - such people are the workers of society, the ones who don't get bored.</i><p>I think that lack of curiosity has less to do with intelligence than with upbringing. However, it's just my personal opinion and I would be interested in finding out whether there are any theories or studies about that.