Metaphorical thinking travels one way - concrete to abstraction

Appropriating concrete language - the words we use for everyday experiences and physical things and sensations to describe to abstractions like thoughts, feelings, emotions and ideas.

Every man deploys the language of naive physics when he is talking about psychological matters.

• Asch

Metaphor allow the mind to use a few basic ideas to understand abstract domains and Combinatorics allows a finite set of simple ideas to infinite set of complex ones

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