Could the "left=evil" bit possibly be related to the Christian (or Judeo-Christian?) tradition that the blessed stand at the right hand of God - or is that a result of the original left/right superstition?

By the bye, another Left/Right superstition for you.
Left palm itching, money going out
Right palm itching, money coming in.
I presume that it reverses for true left handers.
It would explain a lot, the only truely abidexterous person I know is fairly well off and I, being equally incompitent with either hand, am permanently skint.

Regards

Walrus