kenney. so who's the head of neuroscience at mount sinai, just up the road from where i am now, and it's very simple. he got cage and he raised a load of rats and all they had to eat was kind of healthy foods and pellet form that were the kind of foods rats evolved over thousands of years. and it turned out when they had food, rats would eat when they were hungry. and then just stop, right? they never became fat. they never overweight, overate. they had some kind of natural, nutritional. that meant they were like, oh, guys, i've had enough right then. professor introduced the rats in cheesecake to the american diet. he fried up some bacon, he got a load of snickers bars. he bought all leather cheesecake, and he put it in the cage alongside the healthy food. and the rats went. crazy for the american. they would literally dive into the cheesecake and eat their way out and emerge just totally slicked with cheesecake. and they ate and i and i and i, as professor kenney put it to me, within a coup