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The Times

Your world is different from a pigeon’s – but a new theory explains how we can still live in the same reality

  • Written by Catherine Legg, Senior Lecturer in Philosophy, Deakin University
Your world is different from a pigeon’s – but a new theory explains how we can still live in the same realityEdijs K/Shutterstock

The human eye registers three colours of light: red, green and blue. But pigeons (and many other animal species) can also see a fourth colour, ultraviolet.

The “four-dimensional” colour space pigeons see may contain millions more colours than ours. To a pigeon, for example, many flowers show patterns that are...

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