If mind were like a control-system modeling the world from within the world then you could think of it as having a certain number of degrees of freedom in the face of a larger system with a great many more, and there would be certain hard limits as to what it could 'know'. But mind and world are not separate and in a sense mind thinks with the full potentiality of the world, just as world knows itself through mind and its yet undiscovered possibilities. The evident incommensurability of mind and world is therefore not the sign or symptom of a limit - mind by its nature being the exceeding of any given limits - but a product of their contingent relationship, of the currently evolved form of an ongoing relationship whose further possibilities remain unknown. What can be seen is that the limits of mind in experience are contingent, defined by this inner relationship and there is no knowing what the intrinsic limits of mind are. There is every reason not to accept that these limits are defined by the world, but that the world itself is only a shifting and contingent boundary within the true nature of mind.