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Conceptual representations of things you can’t perceive

December 7, 2018

How do people born blind represent rainbows, or the color red, that they cannot perceive? How do we all represent abstract concepts, like freedom or justice?

People are capable of conceiving complex ideas and abstract concepts that do not have sensory referents, things to which these concepts point to in the world. The question of how such concepts are represented in the mind has been discussed by philosophers for centuries. In the 18th century, rationalists and empiricists debated about the role of the senses in generating knowledge, and it...

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Seeing with your tongue

May 15, 2017

Sensory-substitution devices help blind and deaf people, but that’s just the beginning.

By Nicola Twilley - The New Yorker