Abstract
There is the observation problem in quantum theory. In quantum mechanics, wave function obeys Schrodinger's equation, but wave function acts in other uncertain ways in an observation. This action is called reduction of the wave packet. Thus the observation problem means that quantum theory could be inconsistent and its application would be unsuitable. Next we consider what consciousness is. The state that one awakens to oneself and is aware of oneself considering things as objects, can be thought of as being conscious. Namely, one could not be conscious of the self itself without paying an attention to oneself. This leads to a big question: Who on earth is a person thinking of the self? This situation might be regarded as some kind of discrepancy, but we are always faced with a similar situation whenever considering consciousness. In this structure of logic, there is a similarity between the observation problem and phenomena of mind and consciousness.
