Terence Kemp McKenna (November 16, 1946 – April 3, 2000) was a writer and philosopher. He was notable for his many speculations on subjects ranging from the Voynich Manuscript to the origins of the human species to Novelty theory, which claims time to be a fractal wave of increasing novelty, which culminates dramatically in 2012. His concept appeared to involve a combination of hallucinogenic chemical agents, Gaianism, and shamanism.