Combining Texts
Ideas for
'Parmenides', 'Language,Truth and Logic' and 'The Relation of Sense-Data to Physics'
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23 ideas
12. Knowledge Sources / A. A Priori Knowledge / 4. A Priori as Necessities
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5198
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We could verify 'a thing can't be in two places at once' by destroying one of the things [Ierubino on Ayer]
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12. Knowledge Sources / A. A Priori Knowledge / 5. A Priori Synthetic
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2619
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Whether geometry can be applied to reality is an empirical question outside of geometry [Ayer]
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12. Knowledge Sources / A. A Priori Knowledge / 7. A Priori from Convention
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5197
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By changing definitions we could make 'a thing can't be in two places at once' a contradiction [Ayer]
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12. Knowledge Sources / A. A Priori Knowledge / 8. A Priori as Analytic
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5204
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To say that a proposition is true a priori is to say that it is a tautology [Ayer]
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12. Knowledge Sources / B. Perception / 4. Sense Data / a. Sense-data theory
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6524
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Positivists prefer sense-data to objects, because the vocabulary covers both illusions and perceptions [Ayer, by Robinson,H]
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12. Knowledge Sources / B. Perception / 4. Sense Data / b. Nature of sense-data
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6483
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Russell held that we are aware of states of our own brain [Russell, by Robinson,H]
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8244
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Sense-data are qualities devoid of subjectivity, which are the basis of science [Russell, by Deleuze/Guattari]
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6462
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Sense-data are not mental, but are part of the subject-matter of physics [Russell]
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6463
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Sense-data are objects, and do not contain the subject as part, the way beliefs do [Russell]
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6464
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Sense-data are usually objects within the body, but are not part of the subject [Russell]
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6467
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No sensibile is ever a datum to two people at once [Russell]
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12. Knowledge Sources / B. Perception / 4. Sense Data / c. Unperceived sense-data
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6459
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We do not know whether sense-data exist as objects when they are not data [Russell]
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6460
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'Sensibilia' are identical to sense-data, without actually being data for any mind [Russell]
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6461
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Ungiven sense-data can no more exist than unmarried husbands [Russell]
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12. Knowledge Sources / B. Perception / 4. Sense Data / d. Sense-data problems
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6458
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Individuating sense-data is difficult, because they divide when closely attended to [Russell]
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6469
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Sense-data may be subjective, if closing our eyes can change them [Russell]
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12. Knowledge Sources / B. Perception / 7. Causal Perception
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5193
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Causal and representative theories of perception are wrong as they refer to unobservables [Ayer]
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12. Knowledge Sources / C. Rationalism / 1. Rationalism
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5200
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The main claim of rationalism is that thought is an independent source of knowledge [Ayer]
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12. Knowledge Sources / D. Empiricism / 1. Empiricism
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4729
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Empiricism lacked a decent account of the a priori, until Ayer said it was entirely analytic [O'Grady on Ayer]
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5180
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All propositions (especially 'metaphysics') must begin with the senses [Ayer]
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5169
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My empiricism logically distinguishes analytic and synthetic propositions, and metaphysical verbiage [Ayer]
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12. Knowledge Sources / D. Empiricism / 4. Pro-Empiricism
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5185
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It is further sense-experience which informs us of the mistakes that arise out of sense-experience [Ayer]
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12. Knowledge Sources / D. Empiricism / 5. Empiricism Critique
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5199
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Empiricism, it is said, cannot account for our knowledge of necessary truths [Ayer]
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