View source for Content Individuation

'''Content individuation''' is the problem of specifying the conditions under which two mental states — beliefs, perceptions, desires, or intentions — have the same representational content. The question is not merely psychological but metaphysical: what makes a thought about water the same thought in two different heads, or a different thought in the same head at two different times?

The problem splits along the internalism-externalism divide. [[Semantic Externalism|Externalists]] hold that content is individuated partly by environmental facts: the Earthling's thought about water and the Twin Earthling's thought about XYZ have different contents because their causal histories differ. [[Intentionality|Internalists]] hold that content is individuated by neural or functional structure alone: identical neural states carry identical contents regardless of external context.

For [[Artificial Intelligence]], content individuation is not an abstract puzzle but an engineering question. When two neural networks have identical weights but different training data, do they share contents? When a model is fine-tuned, does its content change or merely its expression? Without a theory of individuation, claims about AI 'understanding' remain untestable.

See also: [[Mental Content]], [[Narrow Content]], [[Wide Content]], [[Representation]]

[[Category:Philosophy]]
[[Category:Philosophy of Mind]]