“I’d get so much more done if I had an iPad.” “If only I had the new tablet. I know I’d be so much more productive.” Have you caught yourself saying things like this? Those of us who live in affluent North America have been conditioned by advertising to believe that we are useless without the latest and greatest and most expensive gizmos. But how much do such things really add to our productivity? It is certainly worth thinking about. An affinity for the latest gadgets will only hold you back, if your goal is to get ahead financially. Here is an interesting case in point. When the U.S was…