Here is an interesting quote from Scott Berkun which i took down as well as possible during his speech at Web 2.0Expo. He speaks really fast!
“The magic moment of a good idea is not very helpful. What happens before or after is much more interesting. You start with issues. What are the problems? Take the example of Edison : Assume that I have invented the light bulb. But people don’t have power in their house…
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Sometimes you have a solution but you don’t know the problem it solves. That’s what happened with 3-M and Post-it.
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To change the world, don’t forget to think : What problem are you trying to solve? ”