Sentence:  We forget what we have learned in the last 60 years. At university I once asked one of my lecturers why he was not talking to us about continental drift and I was told, sneeringly, that if I could I prove there was a force that could move continents, then he might think about it. The idea was <WSD>moonshine</WSD>, I was informed. 
Meaning of the word marked with <WSD> tags:  Nonsense.