I’d go a step further and say less than it needs smart people, the world needs loving people. You can be smart, selfish, hateful, and in general a negative val

I’d go a step further and say less than it needs smart people, the world needs loving people. You can be smart, selfish, hateful, and in general a negative value-add to society. You can also genuinely care for people, have a sub-par IQ, and not “accomplish much” and make a huge impact on many lives. As a corollary, if “all” you ever do is raise loving, empathetic children you’ve left the world a better place than you find it.