Hindsight is always 20/20. There was no way to know for sure that FourSquare would be this successful. Now if you could tell me with 100% certainty that a par

Hindsight is always 20/20. There was no way to know for sure that FourSquare would be this successful. Now if you could tell me with 100% certainty that a particular startup would be worth $1 billion in 5 years, that would be useful!