Time and again-from the collapse of the Soviet Union to the events of 9/11 to the onset of the Arab Spring-events have caught the experts, whether in government or on the outside, completely by surprise. Business owners with comparable performance records go bust. Brokers lose their clients. Physicians get sued for malpractice. Yet think-tankers and policy wonks continue to opine, never pausing to reflect on-or apologize for-their spotty records.

In present-day America, expressing reverence for those who serve in uniform is something akin to a religious obligation. Everyone professes to cherish America's "warriors." Yet such bountiful, if superficial, expressions of regard camouflage a growing gap between those who serve and those who applaud from the sidelines. Our present-day military system, based on the misnamed All-Volunteer Force, is neither democratic nor effective. Why has discussion and debate about its deficiencies not found a place among the nation's political priorities?

Memorial Day orators will say that a G.I.'s life is priceless. Don't believe it. I know what value the U.S. government assigns to a soldier's life: I've been handed the check. It's roughly what the Yankees will pay Roger Clemens per inning once he starts pitching next month.

Ideology makes people stupid.

Why do terrorist attacks that kill a handful of Europeans command infinitely more American attention than do terrorist attacks that kill far larger numbers of Arabs? A terrorist attack that kills citizens of France or Belgium elicits from the United States heartfelt expressions of sympathy and solidarity. A terrorist attack that kills Egyptians or Iraqis elicits shrugs. Why the difference? To what extent does race provide the answer to that question?

To divine the course of world events, you'd do as well to probe the entrails of dead animals. Better still, ask your hairstylist. She will be at least as insightful and probably more entertaining a prophet than anyone you can read in Foreign Affairs or the op-ed page of the Washington Post.

I began to appreciate that authentic truth is never simple and that any version of truth handed down from on high - whether by presidents, prime ministers, or archbishops - is inherently suspect. The powerful, I came to see, reveal truth only to the extent that it suits them.