I don't understand the point you're making. A. Your examples are of animals disallowed - not allowed. B. Those animals are obviously much more feasible, physi

I don't understand the point you're making. A. Your examples are of animals disallowed - not allowed. B. Those animals are obviously much more feasible, physically. C. Regardless of how feasible they are, I simply gave a reasonable answer to the question - I didn't imply that all human systems have that same answer. You should explain your thoughts, instead of only posting links with no context.