SCIENCE

How We Count Using Our Bodies: A Fun Look at Numbers and Limbs

Mon Oct 20 2025

Counting is something we do every day. But have you ever thought about how we use our bodies to count?

Body-Based Numeration Systems

Our bodies give us a ready-made tool for counting. We have ten fingers and ten toes, which makes it easy to count up to twenty. But our bodies also have limits. We can't grow extra fingers or toes, and our body parts come in fixed shapes and sizes. This means we have to get creative with how we count.

Compositional Elements

One way to get around these limits is by using compositional elements. These are like building blocks for numbers. For example, we might use our hands as a base and then add fingers to count higher numbers. This is similar to how we use a base ten system in math.

Cultural Variations

Researchers looked at a database called BodyBase to see how different cultures use their bodies to count. They found that there are many different ways to do it. Some cultures use hand shapes, while others use movements or the space around their bodies. This shows that body-based numeration systems are just as varied and complex as verbal or written systems.

Why It Matters

Understanding how we use our bodies to count can give us insights into how we think about numbers. It also shows us that counting is not just about memorizing symbols or words. It's about using the tools we have at hand, literally!

questions

    How do body-based numeration systems adapt to the limitations imposed by human anatomy?
    How do the patterns of compositionality in body-based systems compare to those in verbal and notational systems, and what can we learn from these differences?
    Could body-based numeration systems be a secret way to control human behavior through numerical constraints?

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