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Full Idea
If content is said to be 'covariance' with something in the environment, then the belief that there are horses in the field covaries reliably with the presence of horses in the field, but also the presence of horse genes in the field.
Gist of Idea
Content may match several things in the environment
Source
Jaegwon Kim (Philosophy of Mind [1996], p.192)
Book Ref
Kim,Jaegwon: 'Philosophy of Mind' [Westview 1998], p.192
A Reaction
That's the end of that interesting proposal, then. Or is it? Looking at the field from a distance this is right, but down the microscope, the covariance varies. The theory lives on.