"While greenies and their media flunkies continue to savage the gasoline-powered internal-combustion engine and rhapsodize about hybrids, hydrogen, electrics, natural gas, propane, nuclear, and God-knows-what-other panaceas, perhaps including bovine urine, there are no realistic, economically viable alternatives. None. Zero. Like it or not, as long as we remain dependent on the private automobile for transportation (roughly 80 percent of all movement in the nation is by car), we are harnessed to the IC gas engine."

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From this new point of view, the universe I had inhabited became an object I could perceive in its entirety. It was a hypersphere embedded in a cloud of alternative states - the sum of all possible quantum trajectories from the big bang to the decay of matter. "Reality" - history as we had known or inferred it - was only the most likely of these possible trajectories. There were countless others, real in a different sense: a vast but finite set of paths not taken, a ghostly forest of quantum alternatives, the shores of an unknown sea.

— Robert Charles Wilson