[irv]

Boredom is a warning signal when we feel a lack of mental challenge.

My teachers never believed that line and now that I'm an adult, I don't either.

I've noticed that the people who are most easily bored, are often the stupidest.

[RightWhale]

I've noticed that the people who are most easily bored, are often the stupidest.

OTOH, the most boring people are often the smartest. Nature prefers a stable balance. Summer, winter; night, day; boring, bored.

[Henrietta]

"I've noticed that the people who are most easily bored, are often the stupidest."

I've noticed that too. They're too dumb to figure out something with which to entertain themselves.