I like his approach: “I’m not trying to disprove the laws of physics, as they are always true, I’m merely trying to understand how our bodies interact with them as it is not entirely evident at this moment in time.”
Linear expectations - especially ones based solely on the raw numbers of calories - are so often wrong here. The body can be incredibly thrifty, in frustrating ways. It can also apparently “waste” calories, excreting them (?), burning more of them for heat, or engaging in some other real voodoo - I only gained 5 lbs or 2.3 kg per year while eating 5000 - 10,000 calories per day on many, many days, and that was high-carb eating.