Rileys Freaky Fridays

Well, it certainly costs a lot more now. Thank you, science!

The development of agriculture, and domestication of animals for food purposes itself, was the first invention, necessary to create large population centers in the first place.Invention of, metal, for plows, combines, transportation, storage, refrigeration, plastics,irrigation,dams and control of water supplies, fertilizers, pesticides,genetically developing plants and animals for high yield,large scale industrial fishing and fish farming, each advance, adds incrementally to that first invention.

Yes by selection of high production charactors, producing enough eggs and meat.