I had fun creating this evil thing this morning:

Leave me a comment below to let me know how you did. I tested this on my wife this morning, and she spent about five minutes studying it before I finally had to tell her the answer. And she’s no dummy.
September 5, 2012
I think I found the error, but if I post it here, that would kind of spoil it for others…
September 5, 2012
Good point. Here is the answer:
https://supercopyeditors.com/answer/