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Published: June 20, 2017, 8:26 p.m.

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This week we talk about counterfeit rupees, the blockchain, and cryptocurrency.

We also discuss Ethereum, bubbles, and Dutch tulip mania.

This is a public episode. If you\\u2019d like to discuss this with other subscribers or get access to bonus episodes, visit letsknowthings.substack.com/subscribe'