>it is a very hostile environment. I've never thought of it this way, and you are right from both a technological and biological perspective. Biologically we

>it is a very hostile environment. I've never thought of it this way, and you are right from both a technological and biological perspective. Biologically we are wonderful containers of nutrients, but we have an army only the very sneaky or militant can overcome. Once that army stands down we are rapidly colonized - which is why we must be so careful with food/meat storage.