A scholar of Eastern religions at a Buddhist conference declares that  any enlightenment will always conform to the descriptions prescribed by the tradition through which it has arisen - each will verify the truths of their tradition, however distinctive these happen to be. If a Vedantin or a Christian experiences shunyata then they are deluded, etc. This statement greatly upsets the Zen practitioners in the audience who attempt to argue it down. Their behaviour merely indicates the shallowness of their realisations, they could at least treat have treated it as a sort of koan. Similarly some advocates of spirituality believe it is important to acknowledge an underlying cosmic force which has guided evolution above and beyond the pure randomness asserted by the scientists. Again, the putting forward of such notions shows a complete misunderstanding of both science and spirituality. Finally, a self-professed non-dualist expects that realisation of the ultimate must be totally formless, "pure white light". These are all versions of the same misunderstanding - forms of "spiritual materialism", or category errors, an insistence on yoking together incommensurate things, or conversely the failure to embrace the absolute identity of samsara and nirvana.