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War Stories: Pathologies in the Use of Names 139 3.3.1 a Name
Collision eliminates Smiling Faces A west coast university
provides a "visual class list" Web interface that instructors
can use to obtain the names and photos of all the students
enrolled in a particular section of a class. At the beginning of
the fall 2004 teaching term, instructors noticed that their
classes had several photographs of the same individual. One
might believe a sec- tion includes a set of triplets, but not
triskaidekatuplets. What went wrong: When there is no picture
available for a student, the system inserts an image of a smiley
face with the words "No picture available". The system designer
stored the image in a file named "smiley.jpg". That fall a new
freshman whose last name was Smiley registered the user name
"smiley". As one might expect, the freshman's photograph was
named "smiley.jpg", and it became t