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Re:Warrior skeletons reveal Bronze Age Europeans couldn’t dr... by Retric on Sunday September 06, 2020 @06:15PM (#24395088)
Milk is vastly more efficient than directly eating cows. It’s the same reason eggs are cheaper than eating chickens, compounded by an even longer lifespan.
Re:Warrior skeletons reveal Bronze Age Europeans couldn’t dr... by AlotOfReading on Sunday September 06, 2020 @06:40PM (#24395212)
The comparison isn't between milk and not-milk. As I mentioned previously, you can eat dairy without lactase persistence.

Secondly, lactation is a pretty different energy calculus from eggs. The calories in it can be used to grow the baby animal it's intended for. That would still be less efficient than direct consumption, but probably not as substantially with ancient animals.