Teaser quote: A guy—Borges—explains that the Zahir is a twenty-centavo coin. —If you’re like me, you think OK, that’s what Argentinians call that coin. Wrong. He goes on to explain that at other times in history the Zahir has been a vein in a piece of marble, a tiger, a brass astrolabe, and many other things. —Now if you’re like me, you don’t know what he’s talking about.