 So everybody knows what an FBA small a is, right? So a small FBA is a functional behavioral assessment, right? So we could have an FBA, which is all big letters, right? So functional behavior analysis, right? Often referred to as just a functional analysis. Really what this is, this is an FBA on steroids, which is why I call it an FBA, right? Why? Because you're analyzing. You're creating experiments to find out what the function of behavior is really about. So in an FBA, just a typical one's FBA smaller. You're just making a well-educated guess about what you think is maintaining the behavior. In a functional behavior analysis, you're actually going to find out, you are going to do an experiment, probably a reversal design, or withdrawal design, go see our videos on that, to find out what really is maintaining the behavior. You take the reinforcer, you remove what you think is the reinforcer, you remove it. Then you go, oh wow, did the behavior go, I need to put back, I need to do all sorts of stuff with it, right? So you can do your genuine experimentation to find out what really is maintaining. It's highly useful in an experimental setting, or when you're trying to design interventions and things, but in the applied setting, you typically use FB small a. So FB small a, functional behavior analysis, or assessment FB big a, functional behavior analysis. It's all you got.