Paul Graham, founder of the Y Combinator seed capital firm, wrote an insightful article called "Frighteningly Ambitious Startup Ideas."  

In it, he describes startup ideas that seem crazy to most sane people.  In the end, he states that rather than trying to tackle these ideas head on by predicting the future, a better way would be to head in a general direction and make adjustments as you go along.  In other words, his perspective is that it's better to be agile with your decisions, which Flite believes too.

"I think the way to use these big ideas is not to try to identify a precise point in the future and then ask yourself how to get from here to there, like the popular image of a visionary. You'll be better off if you operate like Columbus and just head in a general westerly direction. Don't try to construct the future like a building, because your current blueprint is almost certainly mistaken. Start with something you know works, and when you expand, expand westward.  The popular image of the visionary is someone with a clear view of the future, but empirically it may be better to have a blurry one."