How to Memorize 10,000 Numbers or More

By Tim Ferriss
Author of The 4-Hour Work Week

Numbers, or digit strings, are considered by many mnemonists and cognitive scientists to be the most difficult data to memorize. If numbers are both abstract and difficult, how did Hideaki Tomoyori of Japan memorize PI to more than 10,000 places? How did my classmate in Tokyo also multiply four-digit numbers in seconds?

The answer is proper encoding, or translation of the abstract to the concrete. Hideaki used what I’ll teach you here, whereas my classmate used a phantom abacus like in this video.


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