WHEN YOU are the challenger in a presidential election, there is nothing wrong with trying to make it a referendum on the incumbent. With the US economy still refusing to recover at a speed most would like (even if it's faring better than Europe), this old-school 'Throw the bum out!' strategy obviously and understandably appeals to Mitt Romney. Even positive unemployment numbers have fallen short of being convincing, the Eurozone's arteriosclerotic crisis-response policies are increasingly clogging things up across the Atlantic, and now we're hearing worrying noises from the technology sector. There was chipmaker AMD's surprise 11 per cent drop in quarterly revenue, blamed on weaker-than-expected sales in China and Europe. However, a more significant warning came from Applied Materials.
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