In 1905 Albert Einstein stunned the scientific community when he announced that e is equal to mc squared. Until that point, scientists had no idea what e was equal to. Oh, sure, they had known since the days of the ancient Egyptians that e came after i, except when both letters were preceded by a c. But nobody had ever even considered the possibility that e might have anything to do with m. We will never know what other amazing things would have been revealed about the alphabet if Einstein had lived longer. We do know that, just before he died, he told friends that he was working on 'something really big involving k'. 
