Combining Texts

All the ideas for 'Natural Science (lost)', 'Papers of 1918' and 'Phenomenalism'

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4 ideas

7. Existence / A. Nature of Existence / 6. Criterion for Existence
Everything exists which anyone perceives [Metrodorus of Chios]
11. Knowledge Aims / C. Knowing Reality / 2. Phenomenalism
Modern phenomenalism holds that objects are logical constructions out of sense-data [Ayer]
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 [Ayer]
19. Language / D. Propositions / 4. Mental Propositions
Propositions don't name facts, because two opposed propositions can match one fact [Russell]