I think I'm a good hackhands expert.

If there's something I don't understand, I pause the session, and I do my research.
If a client is learning, I'll pause whenever they have a question, and explain in depth so they get the concept.

But the asshole that I worked with today just didn't understand how debugging works. I try one fucking thing that doesn't immediately work (after I already identified the root of his problem), and, as I PAUSED and start adding debugging for him, he ends the session and leaves first a one star review saying nothing, and then a three star review saying "couldn't fix my problem"

Fuck that guy.