Our culture admires people who undergo great physical hardship to perform feats such as climbing tall mountains or swimming enormous distances. But while such achievements require extreme endurance and, often, great personal bravery, they are fundamentally acts of self-promotion that do nothing to advance humankind. It's fine if people want to take on such risky challenges, but we should reserve our praise for those whose activities truly help human beings to lead better lives. Assignment: Should people's achievements be judged according to how much they help others