In superstition over which shoulder should one throw salt?

Right is wrong. Here is the answer: Superstitions about salt date back to Biblical times when salt was a highly prized commodity. It was expensive, crucial in preserving food, and was often used in lieu of currency. So spilling salt was considered an almost sacrilegious offence, and left one perilously exposed to the devil's machinations.

Throwing salt over your shoulder is akin to blessing someone after they've sneezed -- it's a way of keeping the devil at bay while you're in an especially vulnerable moment. Depending on your interpretation, the salt is either intended to blind the devil so he can't witness your error, or keep him from sneaking up on you while you're cleaning up your mess.

It's important to note that the superstition calls for the offender to throw salt over the left shoulder. Many ancient traditions place the devil to the left of the straight and narrow path. The classic image of a devil on one shoulder and an angel on the other often shows the sinister imp sitting on the left side.

And if you want to really follow the letter of the law, you're encouraged to throw the salt with your "good," or right hand. Throughout history, the association of right with good and left with bad caused a number of perfectly respectable left-handed people to be burned at the stake. Not good.