[In a seminar, a] guy there who would ask dumb questions from the get-go: questions that we all knew the answer to and most folks thought were obvious. But as the lecture continued, this guy was the only one left asking questions, and of course was the only one who truly understood the lecture. What was happening is that he was constantly aligning what he thought he heard by asking for clarification. The rest of those in the roomthought they understood, but in reality did not.
It reminds me to ask questions, even the dumb ones if it means forcing the one who is teaching or explaining to restate their point in different words, thus providing better opportunity for true communication.