It is claimed that anything that is material cannot appeal to the consciousness. If physical objects that are external to the mind existed, they would be enduring the whole entity. An atom is indivisible. However if atoms come together they will have sides. If they unite there will be no increase in extent. Idealist Buddhists reject the idea of the integral whole over and above its parts as a single substance is not cognised.
According to Sautrantikas momentary reality cannot be known excepting its representations. On this basis one infers the existence of mind-independent reality. The Vijnanavadas feel that there is no need to infer an objective reality as the casual basis of one's experience. Organised nature of waking awareness implies that objects are identified at particular time and places. The basic claim of the school is that consciousness itself is the only reality. The apparent diversity of the practical world is the product of instability in the individual field of consciousness. The doctrine distinguishes eight aspects of consciousness, the most essential being the alaya-vijnana which is the basis of personal identity. Due to the previous actions' effect the alaya becomes unstable and proceeds to manifest itself in a dualistic form whereby the notions of 'self' and 'other' arise. According to the Vijnanavada School enlightenment is attained through recognition of the alaya as the only reality.
This philosophy is based on an argument that when an image is conjured up of an object it seems to be as real as the original object itself. Combining this with the principle of emptiness; it is disputed that both the mental and the external objects are equally deceptive. Vijnanavada gets its name from its theory of a psychological release from the Alaya-vijnana or the original universal consciousness. It is the only Buddhist school that incorporated emanationist ideas. It prefers a complicated position in which the reality perceived by humans appears by virtue of the capacity of the mind to perceive patterns of continuity and regularity.