I wish I could be as productive in my free time as Robert Wang. Laid off from the very software company he had co-founded, he didn’t loaf, but, rather, turned his attention toward a problem he had not formerly had time to consider: how to feed his family healthy meals, as opposed to fast food and carryout, even when he had little time to cook. Wang, a Ph.D. in computer science, got together with a couple of other telecom engineers and spent a year and a half and $300,000 in life savings working