A high school sophomore asked me this week whether Sept. 11 would always be remembered. Would it always be, as she put it, "somber"? Lacking a crystal ball, I have no answer. And, frankly, looking back seven years to that cataclysmic jihadist atrocity, I realize I'm probably not the most dependable prognosticator because never would I have imagined back in 2001 how successful that heinous strike would be in utterly changing us and our world. Blame ignorance, blame cowardice: The strangest effect of 9/11 has been, on balance, an accelerated campaign of accommodation of Islam's law in the West, a...