Smart people don't think others are stupid

In an ideal world with infinite time for arguing with... well, I'll avoid an ad-hominem when responding to an argument about ad-hominem attacks, but... in an ideal world it would be worthwhile to drill down through the onion layers of rationality, irrationality and emotion which drive any argument we disagree with, every time.

Sometimes this spelunking is both constructive and instructive.

Sometimes though, dismissing the assertion that the earth was created 6000 years ago or that the world will be ending next month with a quantitative assessment of the intellectual capacity of the asserter is a completely appropriate shorthand.

The key is judicious application. ;)

The dictionary defines stupid as: Adjective: Lacking intelligence or common sense.

and intelligence as The ability to acquire and apply knowledge and skills.

Perhaps the author does not often meet people who lack the ability to acquire and apply knowledge and skills but that doesn't mean they don't exist.

Smart people don't think others are stupid merely because of the beliefs they hold. That is, being a [Southerner, Northerner, Republican, Democrat, Indian, American, Christian, Muslim, Atheist, Tauist, Piist, vi user, emacs user, ...] does not mean a person is stupid. There are smart people who really have thought things through and ended up at each of those positions for good reasons.

But smart people might conclude some specific individual is stupid because of consistently erroneous patterns of thought and analysis which do not improve with experience. There are a few individuals who I've spoken to on a variety of topics over the course of years who, as a rule, develop beliefs based on sketchy evidence and then retain those beliefs even in the face of mountains of contrary evidence. Even when they hold essentially the same views as I do, it's often for bad reasons; there isn't really a coherent thought process or a body of evidence that got them to that point. Such people really are stupid.

It is more accurate to say that the difference between stupid people and smart people is that smart people can be proved wrong.

Perhaps OT because of the age involved, but... as a kid, I was 'gifted' (not sure if that label is still used today or not). I would get people (adults or other kids) saying "you're so smart", and I would naturally try to deflect/downplay that - was never really told how to react to statements like that as a 7 year old. "Thanks" just sounds so bland, but, I didn't even think that far ahead.

Instead, I would usually protest some - "no, I'm not really". But eventually I adopted the attitude that yes, there was a difference between me and many other kids in my classes, but it wasn't that I was smart - it was that they were dumb. Relative to me, most of them were. But it wasn't so much a 'dumb' as in 'you're a lesser person', it was just hard for me to realize people didn't retain as much info as I did, nor could they make mental connections like I could, nor as fast.

I do remember having that line of thinking for a few years, and it wore off by early high school age.