As Williamson washed in a public lavatory block, a tourist asked if he was OK, gesturing at his face. “I’m like: what do you mean? My face was covered in bites from insects in the sand dunes, and I was looking in the mirror and couldn’t see myself. That was the moment the recollection of my own face, as well as other people’s faces, started to go.” He remembers touching his face all over, as if he was mapping it in his mind.