Kurt Keefner:

Noë wants to break down mind-body/brain-body dualism, which is commendable. But in so doing, he verges on breaking down subject-object dualism: he wants to project mind out into the environment so our bodily-external tools become a part of us. I am reminded of when Sweeney Todd picks up his razor for the first time in years and cries “My arm is complete again!”
Still, I wouldn’t want to dismiss Noë’s extension of the mind completely. Perhaps without using the pernicious concept of mind, we could speak of different senses or extensions of the self. The core sense of self would be the living organism; in its environment, but distinct from it. The next sense of self would incorporate non-living parts of the self, such as the hair and nails. Here the cat’s whiskers serve as a biological analogy to the blind man’s cane. The third level of self would include our clothing and jewelery, which form part of our ‘person’. Fourth might be the tools we use naturally, such as a fork or a pencil and paper. One could take this further and include the things one identifies with, such as family and country – although such identifications are often problematic. Although there would be a solid notion of the person (conscious and bodily) as the primary sense of the self, we could be flexible about the boundaries for different uses of the word. I think this way of speaking would be more intuitive than super-sizing the mind. A framework along these lines would be flexible enough to handle tough cases: the amputee’s prosthetic limb is intimately part of his self insofar as it is strapped securely to him and responds to electrical stimulation from within him, unlike any other tool currently in use. At the same time, if the artificial limb were to be crushed, the amputee would not himself be hurt.
The definition of self along these lines would be a fascinating thing to explore. I would not want to dismiss the idea that some sense of the self can be larger than the bare organism, especially given the way technology will surely extend the self in decades to come. But I believe it is essential to preserve the idea of the natural person, especially in the face of a Cartesian materialism which would divide and destroy it.
I wonder if he’s aware how much exploration of this idea has already been done by Buddhist thinkers?