Full Idea
A problem for Ryle is that mental states may cause behaviour, but if mental states are themselves behavioural or behavioural dispositions, as opposed to internal states, then it is hard to see how they could do the job.
Gist of Idea
How can behaviour be the cause of behaviour?
Source
comment on Gilbert Ryle (The Concept of Mind [1949]) by David J.Chalmers - The Conscious Mind 1.1.2
Book Reference
Chalmers,David J.: 'The Conscious Mind' [OUP 1997], p.14
A Reaction
I strongly approve of this, as an objection to any form of behaviourism or functionalism. If you identify something by its related behaviour, or its apparent function, this leaves the question 'WHY does it behave or function in this way?'