[Thatcherite]

Two can play at that game. I can cite scientific theory that says bleeding a patient removes bad blood and cures the patient.

Really? "Scientific theory" as in (a) explains past observations (b) makes successful predictions of future observations and (c) there are potential observations that would falsify it (that haven't been made so it is still a theory, and not a failed hypothesis). I'd love to see your cite for that.

[Havoc]

You have to go back in history and read - it was actual practice.. lol