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All the ideas for 'talk', 'Syntagma' and 'Notes on Logic'

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6 ideas

7. Existence / D. Theories of Reality / 8. Facts / d. Negative facts

22312	Facts can be both positive and negative [Wittgenstein, by Potter]
	Full Idea: In 1913 Wittgenstein was explicit that there are both positive and negative facts.
	From: report of Ludwig Wittgenstein (Notes on Logic [1913], B7) by Michael Potter - The Rise of Analytic Philosophy 1879-1930 47 'Mole'
	A reaction: This is a prelude to the Tractatus, in which negative facts are denied in T1.11 (and in a 1919 letter), but then affirmed in T2.06.

8. Modes of Existence / B. Properties / 8. Properties as Modes

16730	If matter is entirely atoms, anything else we notice in it can only be modes [Gassendi]
	Full Idea: Since these atoms are the whole of the corporeal matter or substance that exists in bodies, if we conceive or notice anything else to exist in these bodies, that is not a substance but only some kind of mode of the substance.
	From: Pierre Gassendi (Syntagma [1658], II.1.6.1), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 22.4
	A reaction: If the atoms have a few qualities of their own, are they just modes? If they are genuine powers, then there can be emergent powers, which are rather more than mere 'modes'.

14. Science / C. Induction / 3. Limits of Induction

7295	Maybe induction is only reliable IF reality is stable [Mitchell,A]
	Full Idea: Maybe we should say that IF regularities are stable, only then is induction a reliable procedure.
	From: Alistair Mitchell (talk [2006]), quoted by PG - Db (ideas)
	A reaction: This seems to me a very good proposal. In a wildly unpredictable reality, it is hard to see how anyone could learn from experience, or do any reasoning about the future. Natural stability is the axiom on which induction is built.

14. Science / D. Explanation / 2. Types of Explanation / j. Explanations by reduction

16619	We observe qualities, and use 'induction' to refer to the substances lying under them [Gassendi]
	Full Idea: Nothing beyond qualities is perceived by the senses. …When we refer to the substance in which the qualities inhere, we do this through induction, by which we reason that some subject lies under the quality.
	From: Pierre Gassendi (Syntagma [1658], II.1.6.1), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 07.1
	A reaction: He talks of 'induction' (in an older usage), but he seems to mean abduction, since he never makes any observations of the substances being proposed.

26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / g. Atomism

16593	Atoms are not points, but hard indivisible things, which no force in nature can divide [Gassendi]
	Full Idea: The vulgar think atoms lack parts and are free of all magnitude, and hence nothing other than a mathematical point, but it is something solid and hard and compact, as to leave no room for division, separation and cutting. No force in nature can divide it.
	From: Pierre Gassendi (Syntagma [1658], II.1.3.5), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 03.2
	A reaction: If you gloatingly think the atom has now been split, ask whether electrons and quarks now fit his description. Pasnau notes that though atoms are indivisible, they are not incorruptible, and could go out of existence, or be squashed.

16729	How do mere atoms produce qualities like colour, flavour and odour? [Gassendi]
	Full Idea: If the only material principles of things are atoms, having only size, shape, and weight, or motion, then why are so many additional qualities created and existing within the things: color, heat, flavor, odor, and innumerable others?
	From: Pierre Gassendi (Syntagma [1658], II.1.5.7), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 22.4
	A reaction: This is pretty much the 'hard question' about the mind-body relation. Bacon said that heat was just motion of matter. I would say that this problem is gradually being solved in my lifetime.