A few days before the levitation, scaring Lord Lindsay, Home had opened the same window, stepped out and stood on the outside ledge in the presence of two witnesses. Ivor Lloyd Tuckett argued that Home did this to provide "a rough sketch of the picture which he aimed at producing". Another possible natural explanation for Home's famous levitation was proposed by the psychical researcher Guy William Lambert who suggested he had attached a rope to the chimneys on the roof of the building, and hung the rope down unseen to the third floor. During the alleged levitation Home "swung out and in" the room by using a double rope maneuver. Lambert's rope hypothesis was supported by the magician John Booth.