@hidden Licking a photograph transfers the traces of light coming from the object, via the tongue, on to taste buds. A well-licked photograph is the *taste of light*. The light is reborn in the mouth; the mouth is in fact a *darkroom*. Looking at a photograph, by contrast, transforms the rays of light into neural signals, that is, into numeric relations. Neural signals are *without taste*. They are *neither sweet nor sour*. Thinking interrupts the *gusto* of life. The visual medium interrupts the magic relation in which the object is connected to the stomach via the mouth. An 'analogue' is something that is similar. Chemistry is an analogue of light. The rays of light coming from an object are preserved in protein-coupled taste receptors. There is, by contrast, no similarity between light and numbers. The visual medium *translates* light into neural signals. In this process, the light is lost. In looking at a photograph, smooth brains give way to wrinkly brains. It crumples photography.