> no one seems to have figured how to do it economically Mass-production is the key to economies of scale. Government policies can play a huge role in steering

> no one seems to have figured how to do it economically Mass-production is the key to economies of scale. Government policies can play a huge role in steering us towards goals like that. Why is America so rich? Because of car-industry. And why is car-industry so prominent? Because of the interstate highway system.