No, our magic is computational. The realm of pure mathematics is very real indeed, and the . . . things . . . that cast shadows on the walls of Plato’s cave can sometimes be made to listen and pay attention if you point a loaded theorem at them. This is, however, a very dangerous process, because most of the shadow-casters are unclear on the distinction between pay attention and free buffet lunch here. My job—applied computational demonologist—comes with a very generous pension scheme, because most of us don’t survive to claim it.

