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22429 | We achieve objectivity by dropping secondary qualities, to focus on structural primary qualities [Nagel] |
Full Idea: At the end [of the three stages of objectivity] the secondary qualities drop out of our picture of the external world, and the underlyiing primary qualities such as shape, size, weight, and motion are thought of structurally. | |
From: Thomas Nagel (The View from Nowhere [1986], II) | |
A reaction: This is the orthodox view for realists about the external world, and I largely agree. The only problem I see is that secondary qualities contain information, such as the colour of rotting fruit - but then colour is not an essential feature of rot. |
3249 | Modern science depends on the distinction between primary and secondary qualities [Nagel] |
Full Idea: The distinction between primary and secondary qualities is the precondition for the development of modern physics and chemistry. | |
From: Thomas Nagel (The View from Nowhere [1986], V.3) |