  Up to A106, Kant has talked about nothing but normal individual objects: a triangle and its three sides, a body and its shape and impenetrability. At A107, he suddenly begins to talk about tying together multiple represented objects, indeed “all possible appearances, which can stand alongside one another in one experience” (A108). The solution to the problem of showing that we have to use the category of causality must lie somewhere in this activity of tying multiple objects together.