Bill Gross, a fund manager at Janus Capital Management, says people should be cautious despite a good jobs report because structural changes such as technology are displacing jobs. Prior to that, Ellen Zentner, Morgan Stanley's chief U.S. economist, says the jobs data bar isn't set high for a December Fed rate hike. Alan Krueger, a Princeton University professor, says he doesn't put a lot of weight on today's job report ahead of the Fed's decision next month.