Amazon's clever machines are moving from the warehouse to headquarters

Amazon has long used robots to help humansmove merchandise around itswarehouses. Now automation is transforming Amazon's white-collar workforce, too. The people who command six-figure salaries to negotiate multimillion-dollar deals with major brands are being replaced by software that predicts what shoppers want and how much to charge for it. Machines are beating people at the critical inventory decisions that separate the winners and losers in retail. For the staffers deciding how many books, games or plastic pool toys to peddle, the tradeoff can be stark: Order too little and you miss out.