Zero is a perfidious number. Nobody likes it. Nobody wants to be “a zero.” Nobody wants to get a zero on a test…or zero returns on his investments. It is a line that leads nowhere…with no substance in the middle of it. You can add a zero…or multiply by zeros; it gets you nowhere. And is a zero? Is it something? Or nothing? No one knows. Some remarkable news in the history of zeros appeared this week. Mr. Gideon Gono,...