https://www.cnbc.com/2018/11/04/what-reid-hoffman-wants-in-a-founder-an-infinite-learning-curve.html

Reid Hoffman knows a thing or two about picking winners. The billionaire investor co-founded LinkedIn, and made early bets on companies like Airbnb and Facebook. He's also one of Silicon Valley's multi-hyphenates: a partner at VC firm Greylock, author of best-selling books and host of the popular "Masters of Scale" podcast.

Given that he's seen so many business plans and pitches by start-up CEOs over the years, what is the single most important quality he looks for in founders?