Once, back in university, I was talking with some super smart, A++, law student friends a story about how I watched Australian Big Brother for the first time that day. I was telling them about this really thick woman on the show who had said a number of stupid things:
Me: She's a complete idiot! She actually asked someone why some eggs have chickens in them and why some don't!
Law student 1: Really...
Law student 2: Crazy...
Law student 1: So... um... why is that?
Law student 2: OMG I was just wondering the same thing!
I'm actually on the side of those law students here. A situation like this would have me NOT asking that question and laughing at the "stupid" woman in order to not appear stupid myself.
Which is actually pretty stupid; because a really smart one would ask the question anyway to add to his knowledge.
That's why teachers really have to watch their language. Eg. "As you all know, ... -> Student who doesn't know feels stupid and probably doesn't dare to ask; while asking would cure the problem and make him able to follow the lesson. Calling somebody stupid causes stupidity.
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I'm female. I just can't draw women