From Quora: My Answer to "How do you know if you’re smart? I have good grades and a good SAT, but truly I feel dumb."
Do people think you’re funny? Humor is a sign of intelligence. Do you figure out things before other people do? That is also a sign of intelligence. Don’t beat yourself up.
Author: John Linneball Who did you think? ;-)
I'm the proprietor and only tutor for this business; that's why I named it after me.