Episode 7 investigates the survivability of modern humans by first looking at the philosophy of the killer ape as proposed by anthropologist Raymond Dart; and next discussing the difference between hunter-gatherer societies, known for cooperation and sharing, and settled societies, which demonstrate more aggressive tendencies such as war; and finally showing what is happening to the Kung, the Kalahari Bushmen, as they navigate their way into modern 20th century society; while at the same time positing that it is hierarchies created by villages that leads to war, putting 20th century humans in danger through nuclear war unless we can rekindle the adaptability and flexibility of early hominids to find a way out of extinction.