I think the majority of people would say that those two weren't stupid ideas. Uber didn't become a 'stupid' idea until it's business idea shifted to "sell every

I think the majority of people would say that those two weren't stupid ideas. Uber didn't become a 'stupid' idea until it's business idea shifted to "sell everything at half cost and hope we never run out of money". Airbnb still isn't a stupid idea, to my knowledge. Particularly if you're wealthy enough to afford spare property.