Rob Machin | Executive Coach & Mentor Clarity | Strategy | Growth. In the late 1970s, when a personal computer was still little more than a CRT dumb terminal, I helped create and implement a business office system in a major teaching hospital. The aim was practical: automate billing and invoicing work that relied on comptometers, paper records and manual processing. We were not trying to change the world. We were trying to make work easier, faster and more accurate. It worked