 DRH, different to reinforcement of high rates of behavior. I'm so good, I said everything, no. So high rates of behavior, you want this organism to respond at a really high rate of responding, okay? Whatever that may be. Interestingly enough, in sports, oftentimes you're trying to do things faster, so you get a slower time, I'm thinking swimming, right? So if I swim at a particular rate, if I go down and back and I get a lap or whatever, right? So that takes X amount of time, I'm not gonna tell you how long it takes because it's embarrassing. But you could differentially reinforce my stroke speed, right? So how often, the cycles, how many strokes that I make per minute or per second or whatever it is, right? So you could reinforce different rates of that, so you could have a coach sitting there counting how many of those you do per whatever, you get the idea, right? So you could DRH, make it only reinforce when you're higher than what you were in the past. And I don't mean that kinda high, even though we are in Washington. I mean that a number of higher, okay? So the number is higher. So 10 strokes per minute, 60 strokes per minute, 80 strokes per minute, whatever it is, happens during running too with the steps per minute, if you will. There's lots of different ways that you can count this sort of stuff. DRH!