The dream machine looks simple enough: a 100-watt light bulb, a motor and a rotating cylinder with cutouts. Just sit in front of it, close your eyes and wait for the visions to come. The dream machine offers a drugless high that its creator believed would revolutionize human consciousness. He wasn’t alone. Flicker takes us on a journey into the life of Brion Gysin, his art, his complex ideas and his friendships with some of the 20th century’s key counterculture figures.