The document discusses the history and evolution of animal sacrifice. It explains that in early societies, hunting and killing animals for food or protection was necessary for survival and seen as a sign of bravery. Over time, as food sources became more abundant, animal sacrifice in religious ceremonies became unnecessary and seen as a sign of baser instincts rather than bravery. The document argues that today, animal sacrifice is a brutal and retrogressive tradition that is unnecessary given alternatives and signifies the worst form of ignorance and fanaticism rather than bravery or virtue. As humans continue to evolve ethically, they choose vegetarian options over cruel and unnecessary killing of animals.