Source: CBS News - U.S. NewsThe humble price tag has long served as a common measure of value for consumers. Now, experts warn that artificial intelligence could allow retailers to charge people different prices based on their personal data. One such expert, Lindsay Owens, says that AI threatens to upend universal prices for consumers—a norm that's been in place since the 1860s, when pioneering retailer John Wanamaker introduced fixed prices in his Philadelphia...