There's a selection bias - those of us who got it right are more likely to fill that out (: As a result we can't really rely on overall accuracy, but we can br

There's a selection bias - those of us who got it right are more likely to fill that out (: As a result we can't really rely on overall accuracy, but we can break it out by yes/no to account for the selection bias to get a profile for how a HN correct and incorrect differ.