FunctionalAtheist
Hammer of Reason
Wrong. If that were true then 'yellow' would not be considered to be observable. Yellow, as a color, is purely subjective. You and I may agree as to what is yellow, but that is because we have 'related' (relative) my meaning and your meaning to the physical observation of a specific wave length. That does not mean that my experience and your experience are the same, only that we understand the physical manifestation that leads to my subjective 'yellow' and the your subjective 'yellow.'Only physical phenomena are observable from the third-person perspective because they are objective. Mental phenomena are not. Mental phenomena are only observable from the first-person perspective (a subjective perspective) because they are inherently subjective, not objective. But whether subjectivity (the first-person perspective) itself is even observable from the first-person perspective is the topic of this thread.
I know when I experience yellow, there is a particular wave length involved. I know when I experience consciousness there are particular brain activities involved.
You assume, a priori, that mental phenomena are not physical. You are mistaken.
http://en.wikipedia.org/wiki/Brain–computer_interface
If there was no objectivity in thought, then how could it be mechanized and transmitted in a signal?