Mr Sandel illustrates the old classroom chestnut—is it ever right to kill one
innocent person to save the lives of several others?—with a horrifying dilemma
from Afghanistan in 2005. A four-man American unit on reconnaissance behind
lines stumbled on a shepherd likely, if let go, to betray them to the Taliban.
They could not hold him prisoner. Nor, on moral grounds, would the serviceman in
charge kill him. Released, the shepherd alerted the Taliban, who surrounded the
unit. Three were killed along with 16 Americans in a rescue helicopter. The
soldier in command, who lived, called his decision “stupid, lamebrained and
southern-fried”. Which was right, his earlier refusal or his later regret?