Welcome back to Hello World at Forty, I am Marcus Odhiambo. My guest today is Grace Wanjiru, an accountant in Nairobi with 28 years of experience and, until recently, one very boring Monday morning. Every week she spent five hours reconciling two sets of figures by hand. At 52, she decided to learn just enough code to make the computer do it. Six months later, nine minutes. We talk about how she chose what to learn and what to ignore, the day the spreadsheet crashed, and the conversation with her boss where she admitted her job now took nine minutes. Grace also gives our explainer this week: what a library is, and why nobody writes everything themselves. Then a listener's indentation error that took a whole weekend. You are listening on Witspeak Podcasts.