When the Naysayers Are Loud, Turn Up the Music - Reid Hoffman

Network effects generate a positive feedback loop that can allow the first product or service that taps into those effects to build an unassailable competitive advantage.

Instead, you need to learn as you go, solving more and more complex problems. And with luck, learning the answers to your questions just in time.

a company’s business model describes how it generates financial returns by producing, selling, and supporting its products.