Unused data collected

Nearly every company in the US has a form somewhere for new hires/applicants to list their previous job history in chronological order.This practice was begun during WWII in order to attempt to prevent enemy sabatours from being hired. Since that time, it's been part of most hiring practices, regardless of anyone's need to know what your previous work was.(This is part of the "How can you expect us to pay you $XX for this job when your last (totally different) job only paid you $YY?)This and the practice of 'confidential' salary/pay exist primarily to keep wages down...since if you're salary isn't confidential (i.e. YOU have the right to reveal/conceal it,) you will rapidly find out what your salary is relative to others and it will become more difficult to pay new hires more than tenured employees.All arguments supporting the confidentiality (you may NOT reveal!) are spurious. Public employees pay has always been public information and so far as I'm aware, it has never caused a major problem.Labor is not a 'free market' if pay is "confidential."Of course, surveys and individuals routinely reveal this information despite any signed agreements....