Yes, I agree. I’ve seen these types of assertions quite a bit myself. However, for someone to write that question, they have to have known that Big-O exists. If they didn’t even know it existed, you wouldn’t see questions like this. Are you being disingenuous, or can you simply not read?

The initial assertion was:

> A self taught person doesn't even know that these things exist

Not “a self taught person doesn’t understand these things”, not “a self taught person doesn’t appreciate the usefulness or application of these things”, or whatever else you’re trying to argue.

Ok, just add "usually" after "a self taught person".