" Have we identified a problem a customer wants solved? Does our product solve these customer needs? If so, do we have a viable and profitable business model? Have we learned enough to go out and sell? Answering these questions is the purpose of the first step in the Customer Development model, Customer Discovery. This chapter explains how to go about it. "

― Steve Blank , The Four Steps to the Epiphany: Successful Strategies for Startups That Win