The eye cannot see itself, but in some sense this is a deficiency of the eye whose function it is to see objects and being itself an object. Another eye can see this eye and subject it to the closest observation etc., and while it remains true that by no possible augmentation could the eye see itself in the very act of seeing it might be brought indefinitely close to doing so. This is not the same as awareness being unable to objectify itself, which is in no sense a deficiency, since awareness does not objectify, rather it gives rise to point consciousness whose essence is to do so. Objectification represents a special case you might say, and in no way expresses the essence of awareness which itself knows no deficiency or limit. A corollary of this is that no possible refinement of objective awareness, say pure witnessing, touches the essence of awareness. The necessary deficiency of objective consciousness points to awareness, but not in the way you think.