For 26 years, Richard Edelman has measured the world's trust levels through the Edelman Trust Barometer. In this final episode of our trust series, he joins Andrew Keen to diagnose a new and troubling phase: insularity.

After years of polarization, grievance, and activism, societies are hardening into self-contained camps, "turtles in shells", as Edelman puts it, trusting only those who share their values, media and worldview. Governments are faltering, media credibility is shrinking, and a widening mass class divide is fueling pessimism about the future. Yet amid AI disruption, nationalism, and economic anxiety, Edelman argues that trust can still be rebuilt, from the bottom up. Employers, local institutions, and "poly-national" businesses may hold the key. The question is whether democracies can restore optimism before insularity becomes permanent. Is trust the missing ingredient in democratic, or its final casualty?