What kind of experience do you want to create? A revolutionary technology, a well executed product and a profitable business should not be ends in themselves. Focus on the ultimate experience and let everything else fall in line.
Having an answer to this question -- a concrete representation of where your product is headed -- can help you validate your ideas, impress investors, build a team and keep everyone in alignment.
Drawing from my experience applying methods learned at Adaptive Path to my own startup, Foodspotting, I'll share concrete tools you can use to create a big vision, communicate it to others and validate it, even before you start developing anything.