I remember answering the computer games question and at first feeling like I knew the answer. Then I realized the feeling I was having was that I had a better shot at the question than the average person that I knew, not that I knew the answer with high confidence. Once I mentally counted up all the games that I thought might be it, then considered all the games I probably hadn't even thought of (of which Minecraft was one), I realized I had no idea what the right answer was and put something like 5% confidence in The Sims 3 (which at least is a top ten game). But the point is that I think I almost didn't catch my mistake before it was too late, and this kind of error may be common.