Back in 2015, Google engineer Alexander Mordvintsev unleashed a hallucinogenic nightmare on the world called Deep Dream. The now iconic neural network was a little like a facial recognition system in reverse, offering a fascinating insight into how computers “see” images, and delivering a torrent of stunningly psychedelic images to fuel the internet’s nightmares. In many ways Deep Dream achieved a profoundly true, yet wholly unique, definition of the term psychedelic.