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Single Idea 17378

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

Full Idea

It is surely the absence of experiences like the one Putnam describes that makes it reasonable to attach to molecular structure at least most of the importance that Putnam ascribes to it.

Gist of Idea

Presumably molecular structure seems important because we never have the Twin Earth experience

Source

John Dupré (The Disorder of Things [1993], 1)

Book Ref

Dupré,John: 'The Disorder of Things' [Harvard 1995], p.26

A Reaction

That is, whenever we experience water-like stuff, it always turns out to have the same molecular structure. Twin Earth is a nice thought experiment, except that XZY is virtually inconceivable.

The 17 ideas from John Dupré

17374 The possibility of prediction rests on determinism [Dupré]
17375 Natural kinds are decided entirely by the intentions of our classification [Dupré]
17379 Borders between species are much less clear in vegetables than among animals [Dupré]
17377 All descriptive language is classificatory [Dupré]
17380 Wales may count as fish [Dupré]
17378 Presumably molecular structure seems important because we never have the Twin Earth experience [Dupré]
17382 Cooks, unlike scientists, distinguish garlic from onions [Dupré]
17381 Phylogenetics involves history, and cladism rests species on splits in lineage [Dupré]
17385 Kinds don't do anything (including evolve) because they are abstract [Dupré]
17389 A species might have its essential genetic mechanism replaced by a new one [Dupré]
17388 It seems that species lack essential properties, so they can't be natural kinds [Dupré]
17384 Even atoms of an element differ, in the energy levels of their electrons [Dupré]
17387 Ecologists favour classifying by niche, even though that can clash with genealogy [Dupré]
17383 Species are the lowest-level classification in biology [Dupré]
17386 The theory of evolution is mainly about species [Dupré]
17390 Natural kinds don't need essentialism to be explanatory [Dupré]
17376 We should aim for a classification which tells us as much as possible about the object [Dupré]