Sales is the lifeblood of every organization. It’s how we move products. It pays for all of our great engineers. It fuels our bonus payments, our quarterly earnings, our growth rate, our value at acquisition time. If I were 27 again and working at a start-up and was considering getting an MBA, I think I’d go to my boss and ask if I could spend a year in sales, 6 months in product management or marketing and 6 months in finance. I’d keep my personal balance sheet positive and my future options open. It’s hard to start companies and take risks when you’re $150,000 in debt.