Energy expenditure isn't constant but it can be easily predicted based on body mass and body temperature versus environment. You made a strawman out of the pers

Energy expenditure isn't constant but it can be easily predicted based on body mass and body temperature versus environment. You made a strawman out of the person you replied to, clearly they meant 500-1000 below maintenance (a variable), not 500-1000 below a constant. The severe logical mistake was made by you.