Direct and Indirect Realism
Compare direct access to mind-independent objects with the view that perception is mediated by sense-data.
How to study A-level Philosophy
Learn each position as an argument, connect it to its strongest objection and reply, then decide what conclusion the dialectic supports.
Core concepts
Concept 1
Direct realism holds that the immediate objects of perception are mind-independent physical objects and their properties.
Exam cue: Explain the phenomenon before stating what it allegedly proves about the object of perception.
Concept 2
Indirect realism holds that physical objects cause mind-dependent sense-data through which the external world is perceived.
Exam cue: Distinguish Locke's primary and secondary qualities from the claim that all perceived qualities are mind-dependent.
Concept 3
Perceptual variation, illusion, hallucination and time lag challenge direct realism but also create sceptical pressure for indirect realism.
Exam cue: Evaluate explanatory gain against the risk of a veil of perception.
Targeted study blocks
Specified core
Secure the claim and its place in the debate
Cover perceptual variation, illusion, hallucination and time lag, then assess Locke, Russell and Trotter Cockburn on indirect realist knowledge.
Philosophical work
Reconstruct, challenge and judge the argument
Ask whether each argument establishes a different appearance, a different immediate object or the stronger conclusion that realism fails.
Risk pitfalls and guardrails
Equating perceptual variation with proof that no physical object exists.
Guardrail: Do not replace philosophical reasoning with quotation, biography, intuition or a philosopher's name.
Assuming direct realism denies any causal process between object and experience.
Guardrail: Do not replace philosophical reasoning with quotation, biography, intuition or a philosopher's name.
Presenting indirect realism's sense-data as publicly observable objects.
Guardrail: Do not replace philosophical reasoning with quotation, biography, intuition or a philosopher's name.
Memory anchors
Direct realism
Direct realism says physical objects are the immediate objects of perception.
Indirect realism
Indirect realism says physical objects are perceived through mind-dependent sense-data.
Primary quality
For Locke, a primary quality resembles a quality actually possessed by the object.
Secondary quality
For Locke, a secondary quality is a power to produce an idea in a perceiver.
Veil of perception
The veil problem asks how sense-data can justify belief in an external world beyond them.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What does direct realism claim we perceive immediately in ordinary perception?
What does indirect realism claim is immediately perceived?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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