Five years ago, when developers applied for a federal permit to build the world’s largest offshore wind-energy project off the Cape Cod coast, a widely held presumption was that the project ought to go forward because wind power is inherently good and that Nantucket Sound was as good a place as any to begin the off-shore renewable energy movement. But the Cape Wind project hasn’t moved forward and remains mired in controversy as evidence piles up that its developers chose perhaps the worst location. So, instead of leading the renewable energy movement into the future, Cape Wind may be imperiling that very movement by ignoring legitimate and serious flaws in its project.