just like with anyone else, motivation and ability can’t be taken for granted; they often need to be built up. Everyone wants to live a long life, but couch potatoes struggle to keep up exercise regimens. Most people value education, but few can sustain hours of directed study day after day, year after year, on their own. Everybody wants freedom, but not everyone will risk their own lives on the frontline of protest. Even vaccines, which more or less work upon injection, have no effect if potential beneficiaries don’t want them.