I found this article very useful for evaluating startup ideas, the author lays out a 12 question strategy. http://www.businessinsider.com/essential-startup-que

I found this article very useful for evaluating startup ideas, the author lays out a 12 question strategy. http://www.businessinsider.com/essential-startup-questions-2013-1 http://www.businessinsider.com/essential-startup-questions-2... His key point is identifying potential customers and a way to attract them to your product. If you can't identify those 2 things from the start your idea/invention may not be worth pursuing further.