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Single Idea 7432

[filed under theme 17. Mind and Body / E. Mind as Physical / 7. Anti-Physicalism / b. Multiple realisability ]

Full Idea

If the mental is just that which plays a causal role then there is the possibility, which may even be an empirical possibility, that the causal role of tokens of the same mental type should be filled by tokens of significantly different physical types.

Clarification

'Tokens' are individual items

Gist of Idea

One mental role might be filled by a variety of physical types

Source

David M. Armstrong (Pref to new 'Materialist Theory' [1992], p.xiv)

Book Ref

Armstrong,D.M.: 'A Materialist Theory of Mind' [Routledge 1993], p.-10


A Reaction

This allows for multiple realisability in a physicalist framework. Fear has the same role in all animals, but may be realised in physically different ways. I go further, and say that two mental states could differ, while playing the same role.


The 24 ideas with the same theme [lots of way to implement a thought]:

Neuroscience does not support multiple realisability, and tends to support identity [Polger on Putnam]
If humans and molluscs both feel pain, it can't be a single biological state [Putnam, by Kim]
One mental role might be filled by a variety of physical types [Armstrong]
Multiple realisability was worse news for physicalism than anomalous monism was [Davidson, by Kim]
If mind is multiply realisable, it is possible that anything could realise it [Searle]
If different states can fulfil the same role, the converse must also be possible [Jackson]
Multiple realisation applies to other species, and even one individual over time [Kim]
If physicalists stick with identity (not supervenience), Martian pain will not be like ours [Perry]
A theory must be mixed, to cover qualia without behaviour, and behaviour without qualia [Lewis, by PG]
The materials for a mind only matter because of speed, and a need for transducers and effectors [Dennett]
Physicalism is prejudiced in favour of our neurology, when other systems might have minds [Block]
Lots of physical properties are multiply realisable, so why shouldn't beliefs be? [Fodor]
Most psychological properties seem to be multiply realisable [Fodor]
If a mental state is multiply realisable, why does it lead to similar behaviour? [Papineau]
If mental states are multiply realisable, they could not be translated into physical terms [Kirk,R]
Multiple realisability rules out hidden essences and experts as the source of water- and gold-concepts [McGinn]
A Martian may exhibit human-like behaviour while having very different sensations [Lycan]
Temperature (etc.) is agreed to be reducible, but it is multiply realisable [Chalmers]
Multiple realisability is actually one predicate applying to a diverse range of properties [Heil]
'Multiple realisability' needs to clearly distinguish low-level realisers from what is realised [Heil]
Multiple realisability is not a relation among properties, but an application of predicates to resembling things [Heil]
Consciousness is a process, not a thing, as it maintains unity as its composition changes [Edelman/Tononi]
Maybe a mollusc's brain events for pain ARE of the same type (broadly) as a human's [PG]
Maybe a frog's brain events for fear are functionally like ours, but not phenomenally [PG]