In 2017, when Al had the brain of a three-year-old, JLL set aside $100m (£74m) to fund proptech start-ups. At the time, competitors felt the world’s second-largest real estate agency had gone a bit loopy and really should stick to knitting deals together. A question asked here a year ago. JLL had, by then, invested $425m, taking small stakes in 55 real estate-related start-ups, as well as building a series of AI-based software packages for clients. Today’s question is a bit darker.