Computers are like paper

"A medium is a set of presentation elements, and relations among them, that may be used by a person to create an object, environment or experience for someone else."
Ted Nelson in The Crafting of Media

Computers are not a single, monolithic Medium for thinking. Like paper, they are capable of representing many different mediums. A computer program does seem to be a legitimate medium for thinking. Programs as a medium for thinking.

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