What is deep sleep? Isn't it a thought or concept similar to the concept of having a head? It makes sense for 3rd persons. It's taught to us in childhood. Just as I can see I have no head just by looking, simple experiments can convince me that I don't sleep. I am tired. I go to bed. I see that the clock reads 10pm. I may have some dreams. I look at the clock again. It's now 6am. There is no interruption of consciousness.
Of course 3rd persons and dogs sleep. And people tell me I sleep. A video camera can show me sleeping, just as it can show that I have a head. Or is it just showing where I keep my head? Is it just showing where I sleep, where that experience takes place? Shouldn't I go by what's given? If anything is not given it's deep sleep. J.C.