I think that's his point. Selling software is only one kind of startup. Would be interesting to apply the "get outside the building" thinking to: 1) Games -

I think that's his point. Selling software is only one kind of startup. Would be interesting to apply the "get outside the building" thinking to: 1) Games - how to you verify that a game is "fun" before you build it? Cardboard cutouts and early play testing? 2) Marketplaces - You can verify that people hate eBay or VRBO, but what sort of early validation could you do to take them on? 3) User generated content - What could Yelp have done to validate the market? Those are just a few off the top of my head. Not saying that you can't "get outside the building"-- just that it might take a different type of thinking...