system
Given the following post, respond as if you're commenting on Reddit:
human
Can some please explain to me the open question argument in plain english? It is driving me insane trying to understand it.

I would also like to know why it begs the question.
gpt
If someone asks “Tom is a bachelor, but is he married?” You’ll think he doesn’t know what the word “bachelor” means.

If someone asks “This will make everyone happy, but is it good?” You won’t automatically conclude he is mistaken about the meaning of “good”.

So, “good” can’t mean the same thing as “makes everyone happy”, in the way “bachelor” means “unmarried man.”

So goodness can’t be the same thing as making everyone happy.

For any x “This will X, but is it good?” is open in the same way.

So, “good” doesn’t definable by anything else; goodness is it’s own thing.