The Pilgrim: How Apple Built a Product That Works

The four-square co-founder talks about what it was like founding the company and launching the company. Dennis: "We're uniquely equipped to do this because we have all these check in data, which nobody else has" He says he decided to start his own company eight years ago after that job didn't work out. 'I've been doing four-square for 10 years... This is the longest I've ever had such a struggle'