It wast the early 1960s. Carl Icahn, a poor kid from Queens, N.Y., had worked his way into Princeton University, and done well. He thought he was smart. But then he lost it all — just as the renowned Jack Dreyfus had warned him. What did he learn? In the latest inteview on Wall Street This Week with Anthony Scaramucci and Gary Kaminsky, he says: The market is not a casino. And, he adds, the low current low interest environment is very dangerous.