 We're going to get a little wee bit philosophical on you. This refers to a wonderful paper that Skinner wrote years ago called phylogeny and ontogeny behavior. So I suppose we should just define the word ontogeny. Ontogeny is the behaviors that you learn throughout your lifetime. Seriously, it's all it is. People get so confused by complex words and ontogenic responses and all that stuff. Ontogenic responses, ontogeny, just it's what you learn. What you've done, you weren't born with it. It's not reflexive. Leave that alone kinda. But it's just the things that you experience throughout your life. Probably best referred to as operant behavior. So operant behavior are ontogenic behaviors. This goes right along with phylogenic behaviors, which we'll define in another video, but just know that ontogeny and phylogeny work together to produce the behaviors that we do. Bye.