You cannot build a humane, serendipitous city with teams who are transactional, risk-averse and don't really know themselves. It's not my usual territory, and it's a tough argument to have with the logical, rational, "serious" types who populate engineering, economics and urbanism — but I've been converted. The unlikely converters are Florence Okin and Sam Cohen, who run a workshop called Know Thyself under their business The Twenty Six Collective, and who arrive at cities from completely outside the usual circles: the talent side of startups and the full entrepreneurial tour, plus an apprenticeship under two Dutch master coaches. Their premise, once you follow it through, is uncomfortable for our industry. Cold teams build cold places.

The conversation runs from a survey that found people drowning in success and starved of fulfilment, thro ...