Not relevant to calorie intake (relevant to calorie expenditure, which is a different issue.)
> efficiency of absorption of calories
differences here are the aggregate of differences in the efficiency of absorption of particular nutrients, so while this is a real source of challenges in measuring total calorie intake, its also a challenge in measuring carb/fat ratio of intake.
> determining calorie counts in general (particularly for restaurant food)
Again, the same problem with calorie counts here applies to carb/fat ratios.
>Not relevant to calorie intake (relevant to calorie expenditure, which is a different issue.)
What? How in gods name would you determine the appropriate amount of calories without having a sense of expenditure?
> differences here are the aggregate of differences in the efficiency of absorption of particular nutrients, so while this is a real source of challenges in measuring total calorie intake, its also a challenge in measuring carb/fat ratio of intake.
The variance (across time) of the ratio of absorption of fats vs calories is presumably much lower than that of calories in general (the latter is MUCH more sensitive to both lifestyle and things like "I happened to walk s lot this week"). That's partly conjecture though and your point in general is sound.
> Again, the same problem with calorie counts here applies to carb/fat ratios.
Come on man,the only part of my comment you didn't address is the one that talks in detail about the differences in difficulty between calorie estimation and macronutrient makeup estimation. Why pretend to respond if you're going to ignore the half of my comment that directly addresses your disagreement?
Not relevant to calorie intake (relevant to calorie expenditure, which is a different issue.)
> efficiency of absorption of calories
differences here are the aggregate of differences in the efficiency of absorption of particular nutrients, so while this is a real source of challenges in measuring total calorie intake, its also a challenge in measuring carb/fat ratio of intake.
> determining calorie counts in general (particularly for restaurant food)
Again, the same problem with calorie counts here applies to carb/fat ratios.