Civilization

The Kardashev Scale measures a civilization's advancement by energy usage. Type I harnesses all energy reaching its planet; Type II, all from its star; Type III, all from its galaxy. Humanity currently sits at about 0.7 on this scale.

Anthropologist Margaret Mead considered a healed femur bone the first evidence of human civilization. Since a broken femur makes solo survival impossible, a healed one proves someone else hunted, shared food, and provided care—the very beginning of human compassion.