[fasquoika]

Well, you didn't just find a cave, it was made for you by other people. Interdependence is a hallmark of social species such as Homo Sapiens. Even your caveman ancestors were probably reliant on one another in many ways.

>It seems that someone asked the great anthropologist, Margaret Mead, “What is the first sign you look for to tell of an ancient civilization?” The interviewer had in mind a tool or article of clothing. Ms. Mead surprised him by answering, “a healed femur (thigh bone)”. When someone breaks a femur, they can’t survive to hunt, fish or escape enemies unless they have help from someone else. Thus, a healed femur indicates that someone else helped that person, rather than abandoning them and saving only themselves.