Jacob Hacker on predistribution and Cameron PMQ jibe
21 June 2013 Last updated at 11:56 BST
Predistribution - not be a word in everyone's vocabulary - comes from Ed Miliband's intellectual guru from the US, who has been the a target of a David Cameron joke in PMQs as his name has echoes with the Yes Prime minister TV series.
Prof Jacob Hacker explained the phrase - a way of redesigning what the government does when it does not want to spend any more money or raise taxes - to Daily Politics reporter Adam Fleming.
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