From here. Why has it stayed around so long? Because its proponents conveniently shift the definition a bit whenever they need to, so that it's an ingrained religion masquerading as a shallow scientific theory with no hard proof and tenuous circumstantial evidence.
Edited By Malcolm on 1423681955
Diogenes of Sinope: "It is not that I am mad, it is only that my head is different from yours."
Arnold Judas Rimmer, BSC, SSC: "Better dead than smeg."