I've heard of (but never tried) a similar thing done when showing design concepts to a client. Usually several variations are prepared, and if you're any good they will all be viable options. When presenting to a client they will normally want to try and critique something regardless of how good the designs actually are.

The story goes that you are supposed to make an obvious mistake, like a spelling error, on purpose. This will fulfill the clients' need to provide a critique and allow good designs to remain an option.