An important question is how much we need to fight income inequality. Is it fair to have 35% growth in the upper class and 3% growth in the lower class? Where is a good balance? We have grown a lot richer since the Industrial Revolution, because we’ve become more productive. Wealth is not a zero-sum game. Globalization is good because it allows us to buy cheaper, better products. We can offset short-run job loss by paying or giving human capital to those who lose their jobs to globalization Policies often don’t do what we intend them to do, because they change people’s decisions for the involved choice.