Eberhard's critique--complex geometrical figures, such as the chiliogon, cannot be "intuited," therefore Kant's idea that geometrical knowledge has a necessary reference to intuition must be abandoned--is based on a conflation between constructability in intuition and perceivability
. Kant considers the former, but not the latter, as a characteristic of geometrical entities.
Even more telling is the fact that, in his critique of the notion that one might perceive that a particular thing is endowed with a certain universal property--the very essence of any conceptual awareness--Dharmakirti not only raises questions about the perceivability
of universals, he also points out that the relation of inherence, samavaya, generally held to exist between universal and particular, is also regarded as imperceptible; and he proceeds to launch a general assault against the notion of samavaya.
On one hand, these features require perceivability
; for a melody to be beautiful is for it to sound beautiful, and a melody will be audible only by virtue of its audible instantiation.
Budd's core concept of musl'cal expressivenes - the correct perceivability
of likenesses between music and emotion - is too far removed from the root idea of expression in its original context, namely, the expressing or outward manifesting of inner states, to merit even the "basic and minimal" designation accorded it.
Chakrabarti argues, like a Nyaya realist, that the differences in different cognitions of the same kind of objects establish rather than undermine the case for the perceivability