 Now hang with me. This is wild how it works. And again, I'm the first person here. I know it works. And so once your brain waves say, hey, hold on. Your brain goes, I don't like that the screen's dark. I don't like that. And so you know what the brain does? The brain goes, let's try to – what do I got to do to lighten that screen up? And so the setting – and again, you're training very specific areas of the brain to reestablish these proper brain waves. The brain goes, okay, what do I need to do to get that screen lighter? And the brain starts redoing its own –