成人快手

Bronwen Maddox concludes her pursuit of power with a trip into the world of nudge. Dr David Halpern is chief executive of the Behavioural Insights Team, and he also spent six years as chief analyst of the Downing Street strategy unit. Here he explains how small changes can make a big difference, and why the traditional levers of power don't always work. Presenter Bronwen Maddox asks when a 'nudge' becomes manipulation, a sharp issue right now in the United States.
The presenter is Miles Warde.