“Driving home, I started to think about the discontinuity in the graph of salespeople. Discontinuities are interesting, because that’s where you can see how a system works. In this case, it’s obvious that a great salesperson is going to sell far, far more than a good one. Nine women working together can’t have a baby in one  month, and ten good salespeople still aren’t going to close the account that a great one could. That’s because it’s not a linear scale. The great ones reach out. They work the phones when they’re not first in line. They understand what a customer wants. They’re not just better than good. They’re playing a totally different game.”