[ryanwaggoner]

That's a far cry from what you said. They all had analogues, and you could have explained them to someone before they existed. Perhaps it wouldn't have been clear just how much better they were, but they weren't completely original ideas that had never been done before and were impossible to explain.

[alexrodygin]

Can you quote how many hours Google founders spent talking to customers?

How many Twitter founders spent and why they still don't know the business model that will work?

Facebook started as somewhat of a ripp-off but actually people weren't willing to 'buy' it, hence these stories over IP that Facebook got into over the initial days