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Why our brains are bad at understanding big numbers

If we asked you to imagine a decillion dollars, can you actually picture it in your head? The odds are, you can't. A study in 2013 showed that people find it more difficult to comprehend larger numbers. But why? We speak to Dr Elizabeth Toomarian, Director of the Stanford-Synapse Brainwave Learning Center to find out more, and to learn techniques that can help us understand better.

Video by Darryl Laiu. Presented by Ellenoor Shameli