I've never been convinced that experience is linear, circular, or even random. It just is. I try to put it in some kind of order to extract meaning from it, to bring meaning to it.
You have to allow a certain amount of time in which you are doing nothing in order to have things occur to you, to let your mind think.
We haven't been able yet to determine in terms of genes what makes a human being a human and not another mammal.