You're right this is a statistical anomaly :eek: but in shewart methodology one must wait confirmation with a second anomaly to suspect that the process is out of control - before inquiring on the special cause 

Quote from hypostomus:
...I am very distressed. I think we are agreeing about something, which is not good. I like your QC analogy to reducing variance in a process. IMO a coward in the markets need not find courage, he only need find a system of systems which reduces risk to a level which doesn't make him sweat, shake, and hyperventilate. This is a black humored parallel of the the Zen response to enlightenment, "Chop wood. Carry water." You found some degree of trading success, but you're still a coward. Best regards. - Mike