more from Baruch Brody

Single Idea 12139

[catalogued under 9. Objects / D. Essence of Objects / 12. Essential Parts]

Full Idea

Mereological essentialism (whose leading advocate is Chisholm) says that for every x and y, if x is ever part of y, then y is necessarily such that x is part of y at any time that y exists.

Gist of Idea

Mereological essentialism says that every part that ensures the existence is essential


Baruch Brody (Identity and Essence [1980], 5.6)

Book Reference

Brody,Baruch: 'Identity and Essence' [Princeton 1980], p.128

A Reaction

This sounds implausible, especially given the transitivity of parthood. Not only are the planks that constitute Theseus's Ship now essential to it, but all the parts of the planks, every last chip, are as well.