Making cheap clothes and electronics in factories are good jobs relative to the kind of work that the extreme poor do - scrounging for food in a garbage dump in Manila or farming shitty land. And they make clothing and electronics in Mexico (which is a relatively rich country by global standards) and in America and other first world places. It's not like the economy would just stop making clothes or electronics. It would adjust to satisfy the forces of supply and demand at some optimal equilibrium. Just keep your eye on production, keep your eye on production, keep your eye on production.
