Single Idea 2437

[catalogued under 18. Thought / C. Content / 5. Twin Earth]

Full Idea

There isn't any XYZ, and there couldn't be any, and so we don't have to worry about it.

Gist of Idea

XYZ (Twin Earth 'water') is an impossibility

Source

Jerry A. Fodor (The Elm and the Expert [1993], §2.I)

Book Reference

Fodor,Jerry A.: 'The Elm and the Expert' [MIT 1995], p.29


A Reaction

Jadeite and Nephrite are real enough, which are virtually indistinguishable variants of jade. You just need Twin Jewellers instead of Twin Earths. We could build them, and employ twins to work there.