 FB big A, folks. Not FB small A, FB big A. Why big A? Because functional behavior, analysis, not assessment. All right. Here's the big difference. Functional behavior assessment is anecdotal. It's an observation and it's not, it's not, it's empirical. It's just not scientific. Functional behavior analysis, capital A, big A. It's not capital big A. Oh my gosh. I hope you understand. Is a full blown experiment. You actually are trying to find out what the function of the behavior is. So you're looking at things like, is it escape maintained? Is attention maintained? Is it stuff, you know, stuff happening when the kiddos alone? Whatever, all sorts of different criteria that you can look at what might be maintaining a behavior, right? But we have to put it in an experimental setting to be able to say for sure what's going on. So A, B, A, B, A, B, A, B, A, B, A, B designs. That's a special one. But you can do an A, B design. No, no. A, B, A, B design. There you go. How's that one? No, you put this whole thing into an experimental, into an experiment and you actually start to tease apart the effects of the different reinforcers on behavior and you can actually make accurate scientific statements about what's controlling this person's responses.