According to a recent study, the average lifespan of a Chief Marketing Officer is 23.6 months. And according to Advertising Age editor Scott Donaton
, that number "should be painted on the side of every client headquarters, tattooed on the bicep of every agency CEO. There are tremendous implications, particularly for companies that install revolving doors, constantly change strategies, muddy their brands and suffer the results in sales declines (paging Burger King). There are also troubling consequences for agencies." Don't believe him? Just ask Deutsch.