I have noticed a worrying trend in my academic career - they always leave things on a downer.
My last lecture on the MSc was on the subject of depression.
When I did my undergraduate degree, our final module was on the psychology of ageing, which was structured in a chronological way so that we ended up covering the cheery topic "bereavement, loneliness and dying".
My final essay topic for the MSc? "Has research into the biological basis of depression had any impact on its treatment?"
Hmm, am I subtly being set-up for a lifetime of professional disappointment?