You're still caught up on a different issue. The point that I was trying to make assumed that it is possible for a soccer balls to function as some parts of the body; I was not concerned on whether it could or not. Simon DeDeo used silicon chips as an example; I used soccer balls to really stress the strange implications that functionalism might have.
Yeah, it's a cool idea. However, the idea of a silicon chip functioning as a neuron in a mind functions differently than the idea of a neuron functioning as a neuron in a mind.
Assume that there exists a mind with a substrate of neurons, tissue, etc. (a brain), and a mind with a substrate of chips, electronics, etc.
Both minds believe they have a substrate of neurons (because they function the same).
So in the one case (chips), a mind would
presumably be deceived as to its true nature. In the other case (neurons), a mind
presumably would not.
Ultimately the function of the 2 would be different, resulting in a deceived mind and a undeceived mind.
Even in the case in which both minds function in such a way that they have knowledge of their substrates, they would perceive their substrates differently, which is also a divergence.