This week we’re talking about global capitalism, and how it's in danger of destroying itself from the inside out. The concept is known as a “doom loop”: as the economy grows, those who own all the assets get more and more, those who don’t get poorer and poorer, and as a result growth slows as the machine grinds to a halt. And the key to stopping this doom loop lies in addressing inequality and productivity. To explore this idea and how it affects New Zealand, Bernard Hickey talks to the Productivity Commission's Ganesh Nana and Council of Trade Unions economist Craig Renney.

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