True, lots of great ideas look like bad ideas at first (again, pg). But there's things that look bad because they're bizarre (hey, let's rent out bedrooms!), an

True, lots of great ideas look like bad ideas at first (again, pg). But there's things that look bad because they're bizarre (hey, let's rent out bedrooms!), and things that look bad because they're trivial (hey, let's help people find the nearest bar!). The good bizarre ones could wipe out an existing industry. That's what makes them interesting.