1) First, the underlying study likely is asking both 'what do you think' and 'how confident are you in your answer?" The conditions of the study are very differ

1) First, the underlying study likely is asking both 'what do you think' and 'how confident are you in your answer?" The conditions of the study are very different than the conditions of reading an article about Kahneman's work: when you read the article, you know you should have low confidence in your answers because he's a master of seeing places where our brains do screwy things. 2) He's defining 'good information' a little bit more precisely though - how do you know your information is "good?" Everyone will say they've got good information if you ask them, right?