Paleofantasy: What Evolution Really Tells Us About Sex, Diet, and How We Live by Dr. Marlene Zuk is a fact-check for many claims about our ancestors and the paleo way of living that are popular today. Dr. Zuk takes ideas from popular Paleo-fanatics such as the paleo-diet, barefoot running, or questioning monogamy and provides new scientific evidence to whether or not these ideas hold any weight. She relies on her firm beliefs that evolution has no purpose and is never static to prove that modern-day humans are significantly different than our ancestors. She cites countless studies to why this is true and that it is invalid to use ancestral ways of living as a template to how we should conduct our lives.