The WaPo's David Ignatius has a suggestion for how President Obama should act during his second term: Think Big! The President should tackle Big Ideas and Big Problems by Thinking Big about those Big Things. By Thinking Big, he can solve Big Problems, encourage Business to Think Big (and hence confront Big Concepts and Big Ideas and Big Problems), and help the American People to Think Big themselves. That way lies Big Rewards. What should he, they, and we be Thinking Big about? Only Big Thinking, not David Ignatius, can tell us!