I've Got This From You, Adam.

I'll give you two concrete examples from the last couple of weeks that have been one was received well, one wasn't. So watching this guy teach, second in department, really good teacher. And he said to the kids, right, I'm going to show you how to do this on the board. And it was a volume of a cylinder. And my hypothesis was the kids won't know whether they should be just watching him do this model or whether they shouldBe watching and trying to write things down at the same time. He had a safe, what he wanted to say. So I thought, right, that's my hypothesis. Based on the hypothesis, I'll try and get