In the case of palm-reading, though, you can also register both a right and left hand -- as you can see in our video below, the system will most certainly reject you if you offer the wrong one.

ENGADGET

According to the doctors, the bone marrow cells could re-educate the immune system so it wouldn't reject the hands.

CNN: Pastry chef receives double hand transplant

Electronic returns don't have to be entered into the system by hand, and the IRS's computers reject any returns with incorrect basic information such as Social Security numbers, birth dates (even of a child) and married names (they must match what is in Social Security records).

WSJ: Tax Report: What's New for Tax Season