The quiz claims I got two wrong; I don't know if I (a) clicked the wrong choice and didn't notice, (b) misinterpreted the ambiguity in a question or two, or (c) just had a brain fart. If I wanted to waste three times as much time, I could eliminate (a) and (c), but I still wouldn't know which question I interpreted differently from how I was supposed to. I hate not being able to see which questions I got wrong.