He argues for this on the grounds that an adequate account of truth in mathematics implies the existence of abstract mathematical objects , but that such objects are epistemologically inaccessible .
Objects are causally inert and beyond the reach of sense perception .
He argues for this on the grounds that an adequate account of truth in mathematics implies the existence of abstract mathematical objects , but that such objects are epistemologically inaccessible because they are causally inert and beyond the reach of sense perception .