Math
Math is real, math is imaginary. The importance of math obtains from the debate between those who believed that imaginary numbers were real, and those who didn’t. Is math, as a theory, a description of reality or a system unto itself? Differential calculus is ciritical to Quaternions and Vectorists, whether as a means of measuring space and volume, or describing a curve and rate of change (time). Math gives us points on a plane, and points on a curve. These may be studied as locations, points, distances, movements, speeds, or trajectories. And again, points may be mapped in space or in time. Thus the importance of the book’s “bilocations,” which permit space and time travelers to encounter one another. Riemannian space makes a critical appearance, for which credit is probably due to Gilles Deleuze.