I am convinced my school is retarded

[Lartnev]

Textbooks are the culprits for calling the computer as a whole the CPU. So just go with the idea that CPU can mean both the processor and the computer as a whole (although we all know the truth! ).

You always get people who pretend they know more than they do, just computers aren't understood by so many that most of the time they get away with it. Until of course, they run into someone who does and pwns them