China has revealed a spherical police robot designed to autonomously pursue and immobilize criminals by shooting nets and rolling at speeds of up to 35 km/h.

CEOs including Elon Musk, Jensen Huang and Tim Cook attend a state banquet for President Donald Trump and China's President Xi Jinping at the Great Hall of the People in Beijing https://t.co/u5Qo9svCuD

What Ray Dalio advocates in this video is basically what China's top political leaders have done ever since the end of the 1970s. That approach is to view other nation-states as natural experiments in different systems of political economy, in order to use them as the basis for more effective policy design. These natural experiments enable canny observers to understand just how such systems of political economy work in practice, as well as whether or not they're actually viable. It's an approach