Okay, so what's running through this theme here is not all stress is bad and not all stress management techniques work and some of them make things worse, but what we've got lurking in here is a very simple puzzle which is stress is not uniformly bad. We love stress. We love stress. We pay good money for it in a scary movie on a roller coaster ride. We love stress when it's the right amount of stress. When is it optimal? Perfect versions of stress for us is something that's only moderately stressful at the most, something that's only transient. It's not for nothing that you don't have roller coaster rides going for three weeks. What you also then see is that it's got to be occurring in a context that overall feels safe. And what does that define? That defines stimulation. That defines what play is. What is play about? Here we have a higher ranking dog saying I am willing to suspend our dominance relations right now and allow all sorts of unpredictable interactions and showing how much I'm doing that. I'm going to give you access to my throat or my genitals and we are just great having a great time here playing. What play is about is a circumstance where overall you feel safe and as a result you are willing to give up some control and predictability. Surprise me. That's what play is. That's what stimulation is.