Your second point seems pretty valid, and to address your first point: "There are multiple cues to the same information. Everything has both a symbol and spati

Your second point seems pretty valid, and to address your first point: "There are multiple cues to the same information. Everything has both a symbol and spatial element, for all kinds of thinkers." Indeed, in addition to the spatial length of the notes, there is also a symbol next to the notes denoting their life. You can see this on the linked page, in the second section. (Next to "Intuitive.")