The policymakers of the future – today’s economics students – are being sold a model of the economy that is not just long out-of-date, but downright dangerous. Why? Because it is silent on four critical issues that 21st century macroeconomics cannot afford to ignore. I couldn’t resist the chance to talk about it at a 5×15 event curated by George Monbiot last week. Here’s a 15 minute video of my take on what’s missing at the heart of macroeconomic thinking – and how we can fix that by starting a revolution with our pencils.