A new Turing test: metaphor vs. nonsense.

My basic argument is that a computer cannot distinguish between metaphor and nonsense. This would be my new "Turing Test." I was very fond of a particular Italian poem, but I was told by an Italian friend that it was a hackneyed poem of little worth. I then taught myself to experience the poem alternately, as real poetry and as the silly nonsense that my friend claimed it really was. Having done so, I realized that I could do the same with any metaphor, such as "having a green thumb." Thinking about the nature of this switch, from the literal to the metaphorical, I also realized that it was the sort of change that could not be prescribed or even described: this, the basic aesthetic gesture, remains beyond the boundary of logical definition. It then dawned on me that it might provide a test for the validity of a "Turing Test," by any definition. Can a computer track a mind as it goes through this transformation? I could not envisage such a possibility. This would be a "Turing Test" based on the discipline of aesthetics rather than on technology. It may even be argued that the ability to experience metaphor is the very definition of the human.

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