@mikeJB I have a similar joke to the philosophy one (and it’s surprisingly a true story): A philosophy class of 40 sit at their seats to take the final exam. To the class’s confusion, they were given a paper that had only one question: “Why?”. To make matters even more difficult, the professor informed the class that this exam had only the outcomes of passing or failing, no middle grades (i.e., B-, C+, C, etc.). When the grading was complete for that class, only two students passed with an A+. One answered “Why not?”, while the other answered “Because“.