Mr. Perciasepe helped negotiate vehicle fuel-economy rules during Mr. Obama's first term and is viewed by both sides asaperson who seeks common ground.
For this reason, it was necessary to find acommon ground to group the professions, such as the academic background that allows aperson to become an auditor (a degree, master's degree or doctorate in accountancy, for example).
Common sense would hold that aperson who legally acquires copyrighted material such asa book or music CD generally has the right to resell it at a later time.
It is hardly the kind of social indicator one can get worthwhile data points on (after all, how big or small a shift counts asa new career?) But acommon consensus estimate is that people now are doing what counts as changing career four or five times per person.