<P> The 20th century philosopher Martin Heidegger suggested that subjective experience and activity (i.e. the "mind") cannot be made sense of in terms of Cartesian "substances" that bear "properties" at all (whether the mind itself is thought of as a distinct, separate kind of substance or not). This is because the nature of subjective, qualitative experience is incoherent in terms of--or semantically incommensurable with the concept of--substances that bear properties . This is a fundamentally ontological argument . </P> <P> The philosopher of cognitive science Daniel Dennett, for example, argues there is no such thing as a narrative center called the "mind", but that instead there is simply a collection of sensory inputs and outputs: different kinds of "software" running in parallel . Psychologist B.F. Skinner argued that the mind is an explanatory fiction that diverts attention from environmental causes of behavior; he considered the mind a "black box" and thought that mental processes may be better conceived of as forms of covert verbal behavior . </P> <P> David Chalmers, Ph. D, has commented that the third person approach to uncovering mind and consciousness is not effective, such as looking into other's brains or observing human conduct, but that a first person approach is necessary . Such a first person innovative exploration has revealed the mind is actually separate from the brain . It has been speculated that at birth the mind is possessed of Numerical Knowledge as a reflection of the concept that mathematics appears to explain the structure and functioning of the Universe . </P> <P> The mind has also been described as manifesting from moment to moment, one thought moment at a time as a fast flowing stream, where sense impressions and mental phenomena are constantly changing . </P>

The phenomenal power of the human mind illusion