What do you think the earliest-living person on Earth did for a living – who we can identify by name? Were they a king? A warrior? Nope, he was an accountant. In his book Sapiens, historian Yuval Noah Harari tells the story of a 5,000-year-old stone tablet discovered in Mesopotamia. It reads: “29,086 measures barley 37 Kushim months”, meaning “29,086 measures of barley received over a period of 37 months. Signed: Kushim”. Kushim was someone who recorded transactions: an accountant, no less!