I believe it is just a part of the "Great Mystery", part of the "spirit that moves through all things", we are all connected in some way, made of the same organic compounds, created by the same Higher Power. What is the true meaning of "Fair Chase"? I believe rational thought and logic can be just as much of a hindrance, as it can be an advantage. How many times have you been in the woods, and without hearing, smelling, or seeing, you just simply "feel" the presence of a deer, and you turn and look, and there it is. It happens to me often, esp. towards the later part of the season, when I am in "tune". If it can happen for me, I can imagine the deer rely on it for survival.