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Full Idea
The so-called 'laws of thinghood' govern particulars, saying that one thing cannot be wholly present at different places at the same time, and two things cannot occupy the same place at the same time.
Gist of Idea
A 'thing' cannot be in two places at once, and two things cannot be in the same place at once
Source
Cynthia Macdonald (Varieties of Things [2005], Ch.6)
Book Ref
Macdonald,Cynthia: 'Varieties of Things' [Blackwell 2005], p.237
A Reaction
Is this an empirical observation, or a tautology? Or might it even be a priori synthetic? What happens when two water drops or clouds merge? Or an amoeba fissions? In what sense is an image in two places at once? Se also Idea 2351.
Related Idea
Idea 2351 Aristotle says an object (e.g. a lamp) has identity if its parts stay together when it is moved [Putnam]
| 14960 | Bodies are independent of thought, and coincide with part of space [Hobbes] |
| 17250 | If you separate the two places of one thing, you will also separate the thing [Hobbes] |
| 17249 | If you separated two things in the same place, you would also separate the places [Hobbes] |
| 12506 | A thing is individuated just by existing at a time and place [Locke] |
| 12563 | Obviously two bodies cannot be in the same place [Locke] |
| 12693 | A body is that which exists in space [Leibniz] |
| 13098 | We use things to distinguish places and times, not vice versa [Leibniz] |
| 21535 | Objects only exist if they 'occupy' space and time [Russell] |
| 16496 | Singling out extends back and forward in time [Wiggins] |
| 4480 | Times and places are identified by objects, so cannot be used in a theory of object-identity [Loux] |
| 8292 | Diversity of two tigers is their difference in space-time; difference of matter is a consequence [Lowe] |
| 7961 | A 'thing' cannot be in two places at once, and two things cannot be in the same place at once [Macdonald,C] |