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The Professor wins because he stretches the timeline. He plans for the long haul. Index funds work the same way. In any given 1-year period, the S&P 500 (the US market index) might be down 30%. Scary, right? But in any given 20-year period in history, the S&P 500 has never been down. Ever.

In a brilliant plot twist, we discover the Bank of Spain holds not just gold, but —specifically, the computer algorithms and codes that govern the country’s economic index. This includes:

Think investing is risky like a heist? Think again. Here’s how the strategy behind Money Heist perfectly explains why Index Funds are the smartest long-term play.