Silicon Valley’s successful stories –like Mark Zuckerberg (founder of Facebook) or Chad Hurley, Steve Chen, and Jawed Karim (founders of Twitter)– could cause one to believe that you must be young to make it in today’s workplace. Yes, youth can be more than beneficial to the success of those that have helped create a more cognitively complex,  more team-based, more collaborative, more time pressured, more mobile, less dependent on…