> it's way more profitable to raise chickens than, say, cows. You need to have a bigger barn for cows, you need to do all the hay thing, which is very time consuming and demands a lot of extra work just for feeding said cows, you need to pay someone to take care of the cows when they go out to eat in the summer on the communal field.

This is surprising to me. Of course a cow should be more work to raise than a chicken. But it has so many times more meat on it than a chicken, and is more energy efficient per calorie consumed too.

Similarly with beans and cabbage. They might be easier to grow, but in terms of calories they seem much less efficient than, say, potatoes.

If this was addressed in the article, sorry. It's just a blank page on my browser.