Necessary assumption questions are weird, just really have to think whether or not it’s required. Also, I think it’s not just proportional to surface area the energy it takes to run, two animals equal surface area don’t take the same energy to run if one’s going downhill and one is going up.

A undermines the relationship between “if works are challenged, then it’s fine the challenged work has an error.” I think it would still be correct. Think about it in the world, if someone erroneously said Advil cures lung cancer and that answer was take as fact, and it is not challenged, that’s a huge issue.