"I don’t really know," Waterhouse admits. "I just have an intuition that what we are dealing with here is a new encryption scheme based upon a purely mathematical algorithm. Otherwise, there would be no point in using the thirty-two-letter alphabet! If you think about it, Alan, thirty-two letters are all well and good—as a matter of fact, they are essential—for a teletype scheme, because you have to have special characters like line feed and carriage return."