I mean, I think you can make a case that calories in calories out might not make as much sense for some thinner people in that, almost regardless what they eat, they can find ways to either burn or not process the calories. I don't think he does such a good job making the case it doesn't apply the other way. A body needs a set amount of energy to function, you reduce intake enough and weight drops. No lack of figeting or slightly lower core temp is going to be able to outweigh the lack of calories going in. That being said...

I think the real question raised by this article is why eating at the level required to maintain a specific body weight is second nature to some and torture to others. 'Calories in calories out' starts to sound a lot like 'if you don't want to be addicted don't do drugs'. It's much easier said than done by someone who doesn't understand addiction. In fact it's almost worse than addiction, as someone hooked on heroin or booze can do rehab or some other form where you just can't get ahold of those. But if you're addicted to food, you have to deal with the subject of your addiction 3 meal times a day (plus advertising!). That's a hard place to be.