Here the current state of the cathedral is seen at left, contrasted with the hypothesized penultimate version of the nave, at right. In the current design, the main vault has been made sharper than before, so that it reaches a greater total height even though the capitals and springers are located as in the previous schemes. This means that the clerestory wall grows taller, and the flying buttress pair moves upward as a consequence. As a result of this shift, even the bottom of the lower flyer now abuts the wall significantly above the vault springer, a position unseen at similar buildings (e.g. Chartres, Soissons, Amiens, Cologne, etc.). This shift also explains the presence of the rather awkward blocks elevating the flyer springers above the top of the aisle roof, which were not necessary in the previous scheme seen at right.