Glad you you took that in good heart, Ed. I've been to the student bar once or twice myself after lectures! Be assured I have no intention of trying to catch you or anyone else out.

There's just something about philosophy which mean people who fully admit they haven't studied it - like me - have quite strong options about it - also like me! As my darling offspring says, if she's at a club and mentions she studies philosphy people will inevitably mention Decartes, Nietzsche, Marx or some other well known name, but almost always be unable to say much more then one line. She doesn't believe if said she was a materials scientist people would say: "Ah yes, well I've put some decking down, so I know about that."