Does it make evolutionary sense that humans evolved in such a way that our greatest energy stores, ie fat, are not accessible unless we first eat carbs? The whole contention that fat burns only in the flame of carbohydrates originated in 1906. It was an erroneous conclusion based on a simple mistaken observation and interpretation of fat metabolism. Eades points out that contradictory evidence has been around since the 1950s, yet this misunderstanding of fat metabolism remains cemented in biology texts and general understanding.
PS: If fats only burned in the flame of carbohydrates, I think human beings would still be just another primate living in the trees of equatorial Africa eating mostly bananas.