Direct realism

A theory of perception where sense data, mental representations of objects, mediate our awareness of mind-independent objects.

Mental representations experienced of the object of perception, distinct from mind-independent objects and are mind-dependent.

Understanding in indirect realism where knowledge of mind-independent objects is inferred from sense data, making it potentially erroneous.

Indirect realists view perception as indirect due to the causal chain involved in becoming aware of sense data.

Sense data in indirect realism are described as a barrier between the mind's eye and the mind-independent world.

Belief that we directly perceive mind-independent objects without mediation, challenged by the argument from illusion.

The belief that we directly perceive mind-independent objects in the external world, rather than sense data representing these objects.

Properties that exist in the interaction between a mind-independent object and the subject of perception, such as the perceptual variations of an object due to perspective.

Perceiving something that does not mind-independently exist, leading to the conclusion that what is perceived must be mental sense-data.

The delay between an event happening in the mind-independent world and its perception due to factors like the finite speed of light, suggesting indirect perception of the external world.

Philosophers like John Locke and Bertrand Russell argue that our access to the mind-independent world is always indirect, through inferences from knowledge of mind-dependent sense data.

Qualities such as extension, shape, motion, number, and solidity that are measurable objectively and inseparable from the mind-independent object, as proposed by Locke to support indirect realism.

Qualities like color, taste, smell, and temperature that arise from the interaction of the mind-independent object and the subject of perception, not essential to the existence of the object, contrasting with primary qualities.