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Inverse View
It is not the case that Humans have no direct access to things in the external world and immediately perceive only mental likenesses (species) of those things.
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Reasons For
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Reason for 1 of 2
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1.
Direct realists (Reid, Austin) argue that perception is a causal relation to external objects, not a relation to intermediate mental entities.
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2.
Positing species as intermediaries generates an infinite regress: we would need further species to perceive the original species.
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3.
If we only ever perceive species, we lose any epistemic ground for claiming species resemble external things at all.
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Reason for 2 of 2
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1.
Intentionality, as Brentano and Husserl articulate it, allows mental acts to be directed at external objects without requiring numerically distinct intermediate entities.
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2.
The species theory conflates the content of a mental act with its object, a distinction Frege's sense/reference framework shows must be kept separate.
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Reasons Against
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Reason against
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1.
The only way the mind can know external things is through species that resemble them.
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2.
Species are intermediate mental entities, not the external things themselves.
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