Wizard-style renewable advocates like the venture-capital-backed firm that built Crescent Dunes scoff at these ideas. Even in the best of circumstances, the process of replacing the present coal-and-gas grid with a new, renewable-energy grid--all the while keeping the old grid running--would be long, expensive, and risky even if it weren't being sabotaged by the people who are supposed to support it. Insisting on using small-scale components to build in a world of 10 billion only multiplies the difficulty. Now add in the fact that fossil-fuel prices have been declining for decades. Thinking purely in terms of a reliable energy supply, one is hard-pressed to imagine why one would try to do