It's of course a complete inversion of how 'efficient' is used in other contexts. Obese people are much more efficient in how they use the consumed calories an

It's of course a complete inversion of how 'efficient' is used in other contexts. Obese people are much more efficient in how they use the consumed calories and it's only our "obsession" with being slim that makes the scientists involved use such a twisted interpretation. For almost every creature in almost every possible context, being obese is an objectively good thing. Being obese means being successful in gathering resources, being successful in avoiding unnecessary effort and struggle. Being obese is the mark of a good mate. It's only with our usage of the game engine exploits of "cooperation" and "tool use" that we've gotten into a situation where our culture (and bodies) is completely unable to cope with the massive amount of energy we have available. It's a strange place to find itself for any species.