Yeah, I've noticed that too. It always seems to be the math and physics-majors that just swish off biology as 'trivial'. In physics, you can assume a cow is a 1

Yeah, I've noticed that too. It always seems to be the math and physics-majors that just swish off biology as 'trivial'. In physics, you can assume a cow is a 1 meter radius sphere of density 1. You can be fine with that approximation. In biology, you are very very interested in the exact number of cells in the lining of that cow's third stomach 5 minutes after it ate wheat. Approximations don't really work in such complex systems as a mammal.