I think water transport will see a revival. However, we're not going to replay the 20th century. The industrial city of that era will not be revived. Our cities are going to contract. Many of them will contract as a whole but densify at their core.

It is worth remembering that our cities occupy important sites, and therefore some kind of settlement is liable to be there.

I think a lot of things will be self-correcting, even in America. After all, human societies are essentially self-organizing emergent systems. The catch is, how much disorder will we have to endure while this re-self-organizing process occurs.

If it happens that the human race doesn't make it, then the fact that we were here once will not be altered, that once upon a time we peopled this astonishing blue planet, and wondered intelligently at everything about it and the other things who lived here with us on it, and that we celebrated the beauty of it in music and art, architecture, literature, and dance, and that there were times when we approached something godlike in our abilities and aspirations. We emerged out of depthless mystery, and back into mystery we returned,and in the end the mystery is all there is.

We are in for a fiesta of default, repossession, and distress selling of suburban property, much of which will lose its presumed usefulness and monetary value in an energy-scarce economy.

A land full of places that are not worth caring about may soon be a nation and a way of life that is not worth defending.

There is not going to be a "hydrogen economy," and no combination of alternative energy systems or fuels will allow us to continue the suburban pattern. It's finished. We will, however, desperately need to grow more of our food closer to home, and so the preservation of agricultural hinterlands is of great importance. But don't expect the fiesta of suburban construction to continue more than a few more years.