If the phrase ???open innovation??? has a familiar ring, that’s not surprising.?? It’s not only a popular buzz phrase, but it has the type of virtuous ring to it that instinctively inspires a favorable reaction.?? But like most simple phrases, it intrigues rather than enlightens. For example, is open innovation feasible in all areas of creative, commercial and scientific endeavor? If so, do the rules, challenges and rewards differ from discipline to discipline, and if it’s not universally feasible, why not? A new free eBook of essays titled Thoughts on Open Innovation explores these issues, and more.