你的手指能數到多高? (劇透: 遠高於 10) – 詹姆斯·坦頓

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你的手指能數到多高? It seems like a question with an obvious answer. 畢竟, most of us have ten fingers — or to be more precise, eight fingers and two thumbs. This gives us a total of ten digits on our two hands, which we use to count to ten. But is that really as high as we can go? James Tanton investigates.

Lesson by James Tanton, TED-Ed 製作的動畫.