Qualia can be simply and broadly defined as the 'what it is like' character of mental states \cite{Nagel_1974}. They refer to the introspectively accessible, phenomenal aspects of our mental lives. In this broad sense of the term, it is difficult to deny that there are qualia \cite{sep-qualia}. The difficulty which arise from qualia is that, they cannot be communicated, or apprehended by any means other than direct experience. All interpersonal comparisons of qualia are systematically impossible \cite{dennett1990quining}. In this sense it is impossible to communicate or 'access' qualia directly. Consequently, thought experiments have been designed to help understand qualia.