It takes around 4,000 newtons of force to break the human femur, or roughly 6,000 pounds of compressive pressure. The comeback is brutal, full recovery taking upwards of a year in some cases. A year wasted in the hospital for us in the 21st century, but sometimes I think about our late ancestors, skeletons with healed femurs. Their families and communities cared for them, hunted for them, made sure they were safe without any of our modern luxuries. The world has always been cruel and punishing, but humans have found a way to love each other enough to walk again.