you learn something new
every day

i always thought the so-called "ticky question" that starts out: If a tree falls in a forest....
Was: If a tree falls in a forest, and there's no one there to see it, did it really fall?

I spent a good portion of my adult life thinking I was the smartest human in the world. Because, yes, by evidenced by the first part of the sentance, the tree really did fall.

I was informed that no, [idiot], it's If a tree falls in a forest, and there's no one there to hear it, did it make a sound?

Much trickier.