Ideas from 'Phenomenalism' by A.J. Ayer [1947], by Theme Structure

[found in 'Philosophical Essays' by Ayer,A.J. [Macmillan 1965,-]].

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11. Knowledge Aims / C. Knowing Reality / 2. Phenomenalism
Modern phenomenalism holds that objects are logical constructions out of sense-data
                        Full Idea: Nowadays phenomenalism is held to be a theory of perception which says that physical objects are logical constructions out of sense-data.
                        From: A.J. Ayer (Phenomenalism [1947], 1)
12. Knowledge Sources / B. Perception / 4. Sense Data / a. Sense-data theory
The concept of sense-data allows us to discuss appearances without worrying about reality
                        Full Idea: The introduction of the term 'sense-datum' is a means of referring to appearances without prejudging the question of what it is, if anything, that they are appearances of.
                        From: A.J. Ayer (Phenomenalism [1947], 1)