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I think it unlikely that Frank Wilczek and his wife have celebrated 100 billion seconds together (Books, 23 July). Had they done so, they might be able to give us eyewitness accounts of the Elamites stealing the statue of Marduk from Babylon, which, along with their apparent elopement, took place some time about 1162BC.

Matthew Handy, Director of mathematics, Dotmaths.