Thanks, Tessa! I have a super high IQ and skipped 3 grades in high school and got my BS and MS together in 4 years, and I've always been able to tell immediately how smart someone is.

What drives me nuts is that dumb people often just react to someone smarter than them with hostility and enmity.

There are also the "pretty smart" people who refuse to help or take any accountability for their actions.

Often they're the same people, unfortunately.