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A 1968 Firing Line interview in which Milton Friedman explains the negative income tax, a proposal to replace welfare bureaucracy with direct payments.

A short excerpt of Jon Stewart interviewing former Treasury Secretary Larry Summers about the causes of inflation and whether workers or corporate profits are to blame. It comes from an episode of The Problem With Jon Stewart.

In a CNBC interview with Becky Quick, Warren Buffett explains why he sees bitcoin as an asset that produces nothing. He contrasts it with productive assets such as a farm.

A 13-minute clip from This Week in Startups in which Chamath Palihapitiya describes venture capital as a Ponzi-like scheme driven by fees and inflated valuations among VCs.

A five-minute clip in which Erich Fromm asks whether the purpose of work is just making money. He argues that white-collar workers end up selling their personality, relating to others the way goods relate to each other on a market, and he points to creative pleasure, participation and usefulness to society as what work could offer instead.

A short clip in which Carl Icahn tells the story of his first activist investment and of firing 12 floors of people, arguing activism need not be short term.

A short Channel NewsAsia interview clip in which MasterCard's Southeast Asia president voices distrust of cryptocurrencies produced by anonymous computers in anonymous places. It is part of the Perspectives series and runs about four minutes.