10/31/13 - Thursday's Topical Currents begins with philosopher Thomas Cathcart and his book The Trolley Problem, or Would You Throw the Fat Guy Off the Bridge?: A Philosophical Conundrum. He’ll discuss a famous ethical dilemma. Say there’s a runaway trolley car. A crew of five is in its path, all surely to be killed. But wait. You are near a switch which could divert the car to an alternate track. But one man on that track is in the way . . .