[mihaic]

It seems that optimal calorie output from all our available land involves some intermediary animals that eat whatever humans can't eat.

I agree we're raising far too many cattle, but just wanted to point out it's not very simple.

[aziaziazi]

Depends how you define « optimum ».

For IPCC it’s GHG mitigation and the vegan diet beats them all, while « all diets needs to provide full complement of nutritional quality, including micronutrients ».

https://www.ipcc.ch/site/assets/uploads/sites/4/2022/11/SRCC... (Page 488)

Edit : translate giec to ipcc