Under the argument of recollection, how are we ever supposed to be reminded of the Form of a triangle? Suppose that the child is never told explicitly that it is a triangle; does the child have some thought that this triangle represents something greater and intelligible? Or is it only when he starts to see multiple triangles (each one increasing in its participation in the Form of the triangle) that he starts to recognize the idea of absolute 'triangle-ness'? Wouldn't this also imply that it requires sense-perception to even acquire knowledge about the thing itself, let alone the Form of the thing?