It is plain for me to see after reading the posts.
Posters are trying to explain so that we can understand, but we have to understand that we don't understand and then we will be just okay.
I am also shaking my head, but feel better now that I understand that I do not understand especially when Bob is trying to explain to us in so many ways to try to help us understand.
Do you understand what I just posted? I got dizzy shaking my head. :)