Physiology, Philosophy, well, ya know....and there is still so much we don't know (can't quantify at this time) Loved the shirt story gma45-great example. In discussion such as this I always think of a song from the movie "Jesus Christ Supperstar" where Pilot sings, "What is truth, but a changing law, you wanted truth, is mine the same as yours?I wish I was really intellegent and was able to contribute to conversations like this. I ain't but I always like reading and the discussions that follow. Thanks!