"Hunting down animals on the savannah" doesn't scale to 8 billion people. Especially if your goal is that each of those 8 billion people needs to have access to

"Hunting down animals on the savannah" doesn't scale to 8 billion people. Especially if your goal is that each of those 8 billion people needs to have access to the full variety of every possible type of meat, prepared in every possible way... for cheap, and in massive quantities.