Just a few years ago, Fab.com was valued at $1 billion. Today, it's remembered as one of the most epic flame-outs in the history of U.S. technology startups. Bloomberg's Sarah Frier, who in 2013 was the first to report on Fab's internal turmoil, talks to founder Jason Goldberg about how he felt as the company soared and then collapsed. Jason also recounts the lessons he's learned -- so he won't repeat them as he prepares to launch a new business all over again.