Why I just don't get worked up about predictions of scarcity.
Really. I don't think of myself as an optimist on this issue. I'm just comforted by history.
UPDATE: Victor Hanson describes that comforting history. One can certainly be upset with certain current policies. And work to change them to better policies. But don't lose sight of our strengths that bode well for us in the long run.
And don't forget that our competitors have deeper problems than we do.