OK, after days of speculation, I've finally decided what I feel that the Monster Hunter world is. I used to think, when I first started playing MH Tri, that the MH world was just a fantastical world where different species of mythical creatures roamed. That was my initial thought. Then, when I started becoming interested in the biology of these creatures (hence my extensive activity on the Monster Hunter Theory Blog), I began to form a theory as to how all of these wonderful creatures first evolved. My conclusions are written below.