book eludes to it, but in a sense what you didn't have were you had to we'll be treated as liberatorses narrative, and there wasn't enough time spent on surfacing other alternative scenarios and looking those scenarios to have a seat at the table in the deliberation over the decision. other books have been written about that process but studying the wrong decisions, there is a long section about the mistakes that washington made in the battle of brooklyn. a military analysis of a bad choice so it ended up all right in the long run. one more question and i want to make sure we have time for signing too. >> my question is more on personal decisions. the process of getting better decisions requires you to look back at past decisions and critically, and especially failures, and so if the point of getting good personal decisions is to maximize your happening happiness how do you do some self-help with trying to get bert at them and make a decision? >> this came up last night. i was doing a talk at this tech start up hub called beta works and the esos is like fail, fail faster, and embrace failure, you