It is important to understand how the US government has repeatedly and intelligently redesigned the economy in the past, because the market does not undergo an intelligent redesign by itself, according to Stephen Cohen and Bradford DeLong in their book Concrete Economics: The Hamilton Approach to Economic Growth and Policy. There are things that matter immensely for an economy that only government can do. If it hesitates, refuses, or botches the job, the problem does not just go away and the economy does not advance as it should.
My full review of the book is available at my business book reviews website.