Although our body and brain process each sense through a separate system, normally we only become aware of it after the various senses have been woven together. We experience sensation as a whole. We smell a flower in the garden and all at once, it seems, we smell its scent, notice its shiver in the breeze, feel the silk of its petals, hear the crunch of our knee pressing down into the bark mulch of the flower bed and see the faint green haze that seems to rise from its arched turgid leaves. But senses don’t actually work that way. We perceive the world through a limited set of categories that differ sense to sense.
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