Perception alone cannot prove objects exist, even if objects are the ‘best hypothesis’. Therefore we
are forced into idealism as you cannot guarantee mind-independent objects
Initially seems most intuitive theory of perception, alongside principles of
parsimony and Ockham’s Razor as it only involves two parts: the mind and the
external world. However due to its ultimate failure it cannot successfully prove
that objects exist.
DIRECT REALISM
Weakest
criticism Time lag Semantic confusion: confusing the de nition of ‘direct’ with ‘immediate’. Direct = ‘un-
mediated’. Even if perceptions aren’t immediate, they’re unmediated as no other elements/
Stronger
Hallucination factors are a ecting our perceptions - we see things directly as they are.
Criticism hallucinations ≠ perceptions Wouldn’t be able to guarantee all perceptions
weren’t mind dependent
> regular/consistent hallucinations Nulli es the claim all properties of
Strongest
criticism Perceptual variation Provides explanation for perceptual objects are mind-independent,
perceptual variation is undeniable
variation, primary qualities =
and isn’t cause by abnormalities
Most INDIRECT REALISM objective yet we perceive them
indirectly as their secondary (illness or drugs) like hallucinations
signi cant
issue Veil of perception qualities = subjective are. Therefore DR fails
Initially seems strong inductive evidence, but hallucinations =
More Coherence of experience involuntary, we can’t stop through will. Indistinguishable from
convincing
argument (IE)
Involuntary experience + Best hypothesis perceptions in every faction: perceptions
could all be hallucinations.
Strongest IDEALISM - Primary qualities subject to variation Primary issue: cannot
‘prove’ realism through
response to It gives indubitable examples of perceptual variation of objective qualities, proving
INDR induction. (Not deduction =
their subjectivity. If we don’t perceive objective objects, there is no proof they remain
no guarantee)
in existence when we stop perceiving them - so there is a possibility the BH =
incorrect and something else e.g. God is triggering our ideas of the external world.
FORCED INTO SCEPTICISM due to never directly experiencing objective objects
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