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The hydrogen-powered generator that was almost a home-shopping hit
Joy, last year's film about QVC and Home Shopping Network inventor Joy Mangano, may not have been the best collaboration between superstar Jennifer Lawrence and director David O. Russell. But the fact that Mangano inspired a major movie -- as well as her continued success -- says something about both invention and entrepreneurship. Between rapidly advancing high-tech gadgetry and the huge focus on the entrepreneurs of Silicon Valley, it's easy to forget that the umbrella of invention is much wider. As Joy shows, it's about finding a new solution to an existing problem. Easier said than done, of course.
