Quite right. There are always people who undergo spontaneous improvement, and if we cherry-pick success stories, we might just come up with those examples. I'd rather have a proper statistical study, and I think that CfAR is working on that. But until then, I'll make do with success stories.
I think it's past time for another Stupid Questions thread, so here we go.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Please respect people trying to fix any ignorance they might have, rather than mocking that ignorance.