His last point about poverty destroying genius was what really struck me. I remember reading that 71% of the world's population lives on less than $10 a day. That doesn't seem to be enough to get a decent education and contribute meaningfully to any field. This means that the world is working at 30% capacity. Our species only gets innovations from the 30% of inventors, entrepreneurs, politicians, scientists who were…
$10/day may yield a room over your head, a dull but acceptable meal and a somewhat austere routine in one place (whatever third world nation) but may yield a chaotic struggle for survival in another area (the USA).
Which is not to say that poverty isn't eating a lot of people but rather that guarantees of food, cloth and shelter can be more useful metrics than median income in various places (world median income is rising but does that mean an increase people's ability to realize their geniuses, visions, passions etc?).