Look, I’m really sorry that I’ve denied you the chance to have a good old go at me, but this time it just hasn’t worked, has it? Better luck on the next thread!
There's no good old go. Talk about a chip there 
You seem to think anyone in a classroom should know about almost anything that could be covered across a full range of related degrees (or more accurately have a mental list of things you think other people should know outside their specialism that isn't on the curriculum). I don't.
I expect people in the classroom to be specialists in their areas and have a well-developed knowledge of the curriculum.
UrAWizHarry
I agree with you. People regularly think that other people should know what they know and what they value, and seem reluctant to consider that there's lots of people with lots of knowledge about other topics.
Music, books and the arts are pet topics for this. I highly doubt that lots of life's knowledge snobs (who are apparently shocked that people might not know a particular book, or particular album) would have an equal knowledge on particular inventions, or scientific developments, or engineering breakthroughs, world religions, political reforms, or many other topics