People line up outside a bank to exchange old currency notes with new ones on November 10, 2016 in New Delhi India. Shams Qari/Barcroft Media via Getty Images hide caption
Anil Bokil, a mechanical engineer by training, had a plan for demonetization. He presented it to now Prime Minister Narendra Modi in 2013. Chhavi Sachdev /NPR hide caption
Montagu Norman, Governor of the Bank of England, c. 1930 Hulton Archive/Getty Images hide caption
A Venture Capitalist Is Betting A Pair Of Socks (And $50 Million) On Bitcoin's Future
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Future central bankers of Ridgefield High Jacob Goldstein/NPR hide caption
A policeman shows printed sheets of counterfeit bills seized by Peruvian police. AFP/AFP/Getty Images hide caption
An employee at a money changer counts $100 bills in Manila on October 25, 2012. NOEL CELIS/AFP/Getty Images hide caption