Those are good questions, and on Less Wrong I wouldn't be hesitant to ask them, but I figured they'd be beyond the ability of the average person to really think about. In my experience getting people to fill out surveys, they easily get indignant and frustrated when they can't understand a question or, perhaps more importantly, the possible motives behind the question. ("Is he trying to make me look like a fool? What an ass, trying to get status over me with his nerdy smarts!") Even if they did understand the question, I'd doubt their answer would be at all reflectively consistent; significantly less so than the answers to the other two questions.