 Yes, a level system. Hmm, I wonder a level system a system that's level a system that's on the bubble. It stays level the whole time It's a system. No, that's not it at all. Let me give you an example. It's a level system folks See you start out here, and if you do well you might go up here, and if you do even more well You might do up here See there you can see me so if you do even more weller than that you could go up here All right, whoop probably a shot come back down here If you better yet go up here and up here. Oh, then they get caught not doing so well They move down here usually one wrong at a time right you get the idea. It's called One of my kiddos does this in their classroom. He doesn't do it But the teacher does anyway clip up and clip down, right? It's a level system. You have reinforcers are at the top Yeah, kids love it. Um There's goods and their beds about it personally. I kind of like it. I think it's kind of cool Um That's it wasn't said You get more desirable reinforcers the further up you go some people don't reinforce it all until they get to the top But that just means that the steps them themselves become reinforcing remember. It's a level. It's a system and it stays flat