The Infinity Puzzle sounds like one of those wooden gadgets that you can play with for a few minutes before wanting to hurl it across the room in frustration, but the infinity puzzle of this book's title actually refers to a mathematical quandary that stumped particle physicists for the first half of last century. The story of how physics moved beyond this roadblock has now been told by Frank Close, a distinguished theoretical physicist as well as a very apt storyteller.
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from Ars Technica http://arstechnica.com/index.php