I think we're saying the same thing. Like you said, prehistoric humans are between 75-80% vegetation (tubers,bark,roots,etc like you said) and 20% meat, which increases a little after fire/cooking/preservation is discovered and is more than apes etc. What I was saying is that the majority of people did not and have not eaten meat every single day in the amounts that the industrial revolution provided, because it was too expensive and could threaten your livelihood (killing cattle for meat now vs milk and more cows later). That doesn't mean they didn't ever eat meat, but that the amounts and frequency were much smaller than today. I don't understand how that is anti-materialist unless I wasn't clear enough in my first comment