Whenever one of my students turns in an assignment without a name, it gets a zero (and yes, that's in the syllabus, now at 18 pages and counting). One reason is that I want to train my students, thoroughly and in a way they'll remember clearly, that they need to be careful about getting credit for their work, especially in the real world after graduation. Another reason is that my classes are so big, and so many of my students are so lax about turning in work, there’s nothing to stop multiple students from claiming the same assignment. Never mind telepathy, telekinesis, or mind reading, then. I refuse even to try doing handwriting analysis!
Silly student! Only dingos eat babies.
Exactly what I was thinking. Aren't wombats herbivorous?
"Who here is telekinetic? Raise my hand."-- Emo Phillips