LA Times: Even for Americans — who are constitutionally convinced that there will always be a second act, and a third, and a do-over after that, and, if necessary, a little public repentance and forgiveness and a Brand New Start — even for us, the world looks a little terminal right now. It’s not just the economy: We’ve gone through swoons before. It’s that gas at $4 a gallon means we’re running out, at least of the cheap stuff that built our sprawling society. It’s that when we try to turn …