Roberge was an MIT engineer who fell into sales, and he ran HubSpot's revenue org the way he would have run a build. Five parts: hiring, training, management, demand generation, technology. Each has inputs you can measure and outputs you can correlate against. Sales is not a personality contest you win by finding a closer; it is a set of loops you can instrument.
Most founders do the opposite. They hire a sales leader, hand over the function, and inherit whatever comp plan came out of that person's last company. Roberge calls it the biggest pothole in the exit from founder-led selling:
Pedigree is the one variable a founder can judge without knowing sales, so it absorbs the attention and the actual skills go unassessed. Roberge runs the other way: given a rep who has sold your customers and one who has closed your deal size, take the deal size. Champion mapping, procurement and legal take years. The vocabulary takes weeks. The formula replaces the question: not who has the right resume, but which measurable traits predict success here.