Netflix co-founder says entrepreneurs should constantly remind themselves that 'nobody knows anything'

How do you overcome the scepticism that often surrounds new ideas? When Marc Randolph came up with the idea for Netflix, the first reaction he received from dozens of people — including his wife — was "that will never work." But, as Carmine Gallo reveals, the repeated negativity from people helped him understand something vital about success and innovation: in this world, no one knows anything.