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Single Idea 17028

[filed under theme 9. Objects / B. Unity of Objects / 1. Unifying an Object / b. Unifying aggregates ]

Full Idea

The particles of bodies attract one another at very small distances and cohere when they become contiguous.

Gist of Idea

Particles mutually attract, and cohere at short distances

Source

Isaac Newton (Principia Mathematica [1687], Bk 3 Gen Schol)

Book Ref

Newton,Isaac: 'Philosophical Writings' [CUP 2004], p.93


A Reaction

This is the sort of account of unity which has to be given in the corpuscular view of things, once substantial forms are given up. What is missing here is the structure of the thing. A lump of dirt is as unified as a cat in this story.


The 18 ideas with the same theme [whether a mere assemblage of parts can be unified]:

Democritus denies reality to large objects, because atomic entities can't combine to produce new ones [Benardete,JA on Democritus]
Parts must belong to a created thing with a distinct form [Plato]
Things are one to the extent that they are indivisible [Aristotle]
Indivisibility is the cause of unity, either in movement, or in the account or thought [Aristotle]
Things are unified by contact, mixture and position [Aristotle]
A 'body' is a conception of an aggregate, with properties defined by application conditions [Epicurus]
'One' can mean undivided and not a multitude, or it can add measurement, giving number [Aquinas]
It is absurd that there is no difference between a genuinely unified thing, and a mere aggregate [Duns Scotus]
If a whole body is moved, its parts must move with it [Hobbes]
A thing is unified if its parts produce a single effect [Spinoza]
Particles mutually attract, and cohere at short distances [Newton]
A body would be endless disunited parts, if it did not have a unifying form or soul [Leibniz]
Accidental unity has degrees, from a mob to a society to a machine or organism [Leibniz]
A set has some sort of unity, but not enough to be a 'whole' [Russell]
Every physical thing is either a living organism or a simple [Inwagen]
'The rock' either refers to an object, or to a collection of parts, or to some stuff [Burke,M, by Wasserman]
Things can't be fusions of universals, because two things could then be one thing [Oliver]
Abstract sets of universals can't be bundled to make concrete things [Oliver]