Why is spectrum invasion a counter argument to functionalist arguments?
Spectrum inversion states that there are different mental processes going on in the mind that vary from individual to individual even though they are represented as a particular physical process. For example imagine that you see colors in exactly the opposite way as I do. Where I see green, you see red. Yet you have been conditioned to identify the color red as green. Externally, it seems as if we both are experiencing the same color but internally we are not. Additionally, when functionalist argue that “what makes something a mental state of a particular type does not depend on its internal constitution but rather on the way it functions,” is thus proven false. Given the example, since color perception in both of us is functionally the same, but our mental processes are different, functionalism must be wrong.
For a better understanding of this question, please see:
http://philosophy103.tk/post/100077292050/functionalism
http://philosophy103.tk/post/100258927965/hey-i-wanted-to-know-what-was-blackbox
http://philosophy103.tk/post/100018300810