 Wasting camera space. Well, what do you say? Duration! Ironic! The duration of these videos. No, duration is the term, the measure of the total extent of time in which behavior occurs. You don't use this for discrete behaviors, right? These are behaviors that are best measured using a stopwatch. We could get really naughty here and make jokes about kids versus older kids. Not kids, but you know what I mean. You know what I mean. You know, adults and older adults before we really get into trouble with these videos. Anyway, so duration, how long am I screaming for? Versus longer, which I'm not going to do. Thank you. So reinforcers, yay! DRL, Brad has me on a DRL, folks, go see that video. So that's it. It's just how long does the behavior occur for? There's a lot of ways to measure it. See the videos on measurement tools. So it's a property of behavior, duration, along with all sorts of other things. That I don't want to, Brad, give you a clue to right now because, you know, I wouldn't want to show you that we have other information to share with you.