Combining Texts

Ideas for 'Philosophical Essay on Probability', 'Epistemology' and 'Unpublished Notebooks 1884-85'

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3 ideas

12. Knowledge Sources / B. Perception / 2. Qualities in Perception / c. Primary qualities
Primary qualities can be described mathematically, unlike secondary qualities [Cardinal/Hayward/Jones]
     Full Idea: All the primary qualities lend themselves readily to mathematical or geometric description. ...but it seems that secondary qualities are less amenable to being represented mathematically.
     From: Cardinal/Hayward/Jones (Epistemology [2004], Ch.4)
     A reaction: As a believer in the primary/secondary distinction, I welcome this point. This is either evidence for the external reality of primary qualities, or an interesting observation about maths. Do we make the primary/secondary distinction because we do maths?
An object cannot remain an object without its primary qualities [Cardinal/Hayward/Jones]
     Full Idea: An object cannot lack shape, size, position or motion and remain an object.
     From: Cardinal/Hayward/Jones (Epistemology [2004], Ch.4)
     A reaction: This points towards the essentialist view (see Idea 5453). This does raise the question of whether an object could lose its colour with impugnity, or the quality of sound that it makes when struck.
12. Knowledge Sources / B. Perception / 6. Inference in Perception
An affirmative belief is present in every basic sense impression [Nietzsche]
     Full Idea: Belief is already present in every sense impression going back to the very moment it begins: a kind of Yes-saying first intellectual activity!
     From: Friedrich Nietzsche (Unpublished Notebooks 1884-85 [1884], 25[168])
     A reaction: He seems right that there is an intrinsic commitment to believing sense impressions, even in animals. Presumably more of a default setting than an intellectual choice.