 There has been extensive discussion of the non-conceptuality of intuition in the secondary literature on Kant’s philosophy of mathematics. For example, Michael Friedman has argued that the expressive limitations of the prevailing logic in Kant’s time required the postulation of intuition as a form of singular, non-conceptual representation (Friedman 1992: ch. 2). Charles Parsons (1964, 1992a) and Emily Carson (1997, 1999) have argued that space must be given in a phenomenological manner as an original, non-conceptual representation in order that we be able to demonstrate the real possibility of constructed mathematical objects as required for geometric knowledge (cf. Shabel 2010: 100–102). All of this at least suggests that Kant’s conception of mathematical construction includes an important nonconceptual element.