Ha, Colpo. We go back a long way. It is good to see you have not lost your rhetorical style. I try to rein it in myself because of the limitations: it is ad hominem, and, most of all, you may miss the real science. I’m undoubtedly not as thin as you are but on “chubby anti-CICO crowd,” it might be worth considering why people with a weight problem might want to look carefully at the question of efficiency of diets. I recommend:

1. A calorie is what?

Calories-in calories-out, diets, thermodynamics and all that - 1

richardfeinman.substack…

Tells you why CICO is not correct as a rule in nutrition.

2. Calories-in-calories-out, substrate cycles and diesel engines

richardfeinman.substack…

Gives you an example of source of inefficiency.