(From Dean Terry's Flckr photostream shared herewith under the auspices of Creative Commons which says "yes.")
When in doubt, don't.
Almost every organization in the world struggles to design and bring new, valuable and cool stuff into the world. With their success, organizations evolve towards consistency and away from variance. As individuals, leaders follow suit. We develop all kinds of strengths and behaviors that help us to perform well at "consistency tasks".
To avoid being too smart, leaders looking to encourage innovation have to learn to catch themselves and overcome the urge to say "no."
Great innovation leaders learn to start with "yes." They see the possibility of new options, give the gift of emotional support for those bringing them new ideas and provide the instrumental support to help these new options progress. The strong ones survive anyway.
See Chapter 16 of Oribiting the Giant Hairball ("The Office of the Paradox") for more on this.
