在第十九课里，Tyler Bosmeny 有一段话：
Prospecting is the process of figuring out who will even take your call. There's this guy at Everett Rogers who has created a technology life cycle adoption curve. He describes it as a bell curve where you have innovators who will try new things, early adopters, mid-stage adopters, late adopters, and laggers. One of the things that was really helpful for me in understanding sales at an early start up is he's quantified the tail of this bell curve. This part over here are innovators, those are your potential customers. It might seem discouraging that only 2.5 percent of companies are your potential customers or would even consider buying from a startup that has no users and no revenue, but I found the opposite. I found it extremely helpful to have this frame of mind because when only 2.5 percent of companies will even take your call or consider using your product, you realize what a numbers game this becomes. If you want to reach that 2.5 percent and you want to get some early sales, you're hopefully starting to realize you have to do a lot of calling. You have to talk to a lot of people.
与之前提到的概念“technology life cycle adoption curve”相关的是另外一个概念“Hype Cycle”: