This is a classic example of the lab scientist pulling the legs off a frog, and then clapping his hands to make the legless animal jump. When it didn't respond, he concluded that when you pull the legs off a frog, it goes deaf.
I think there are other logical reasons for the slight font variations: multiple photocopies of a micro-fiche document, for example, will do strange things to characters.
There are already enough things wrong with it.