Reminds me of this old story (there are many variations): http://www.design.caltech.edu/erik/Misc/Prepare_3_Envelopes.html http://www.design.caltech.edu/erik/Mi

Reminds me of this old story (there are many variations): http://www.design.caltech.edu/erik/Misc/Prepare_3_Envelopes.html http://www.design.caltech.edu/erik/Misc/Prepare_3_Envelopes....