Jovaro, excellent example of your ignorance.
Reflex reactions, such as pulling your finger away from a flame, are not the province of the brain for the most part, but of nerve ganglia along your spinal cord.
Don't you reallly think it would be wise to read up on what you are trying to talk about before you start typing?
If you are at all interested in learning before you spout off, here:
http://itech.pjc.cc.fl.us/fduncan/bsc1093/ap1c14ppt.PDF
I could not find anything more simple than this to help you. Pain is not an intellectual process.
In the meantime, pain reaction is NOT an intellectual activity.
Here is an example of something which Aineo was referring to. When a two year old sees a page of Shakespeare, it means nothing to her. She will draw with a crayon or chalk on it without the slightest qualm.
However when that child is twenty years older, she would NEVER respond that way. She will look at the same page and according to her individual preferences, hate or love or feel ambivilent about Shakespeare, but she will not simply pull out a crayon and draw on the page!
The reaction to the exact same stimuli differ with time.
Why?
In other words, do not confuse reflex reactions with intellectual processes. They are as different as night and day.