It's useful to divide complexity theory into historical epochs: 1950s: Late Turingzoic 1960s: Dawn of the Asymptotic Age 1971: The Cook–Levin Asteroid; extinction of the Diagonalosaurs Early 1970s: The Karpian Explosion 1978: Early Cryptozoic 1980s: Randomaceous Era 1993: Eruption of Mt Razborudich; extinction of the Combinataurs 1994: Invasion of the Quantodactyls Mid-1990s to present: Derandomaceous