As I read it, this is an argument about what it means to be 'real'. The argument goes along the lines of consciousness can only be described behaviouristically.

As I read it, this is an argument about what it means to be 'real'. The argument goes along the lines of consciousness can only be described behaviouristically. Therefore it is a behaviour. Moreover, consciousness only is a 'metaphor' for the material world, rather than a description of the material world. This is then taken to mean that it is so far divorced from the material world so as to merely be an illusion.