To understand things I need to break them down into very small units and very simple terms. That's probably why I like to explain others in simple language rather than using all technical terms. Below is a video which explains pain pretty simply. 

"Why do we hurt? Do we actually experience pain, or is it merely illusion? In this video, Lorimer Moseley explores these questions, and position the pain that we feel as our bodies' way of protecting us from damaging tissues further. He also looks at what this might mean for those who suffer from chronic pain."

I also believe that if someone else is doing a better job than yourself, let them do the hard work. For the same reason I wrote a simple book on how to take care of your pain. It is your body and it is your business to know what is going on in your body and how to tackle it.