1. Learning to Let Go - Cognitive Bias and Sunk Cost Dominica DeGrandis@dominicadDevopsdaysMountain View 2012

2. #LSSC12http://vimeo.com/channels/339107 3. If I could go back and start over, would I s5ll do it at all? 4. Looking at abandoned work hit a nerve. 5. waste 6. Every idea coming down the pipe wont make it. analyze dev test monitorideamaintaindesign builddeliver 7. Sunk cost fallacy Studies going back to the 1970s show we dont equate loss and gain. 8. Sunk Cost Fallacy Aversion to loss leads us to want to hang on to things that weve invested heavily in. 9. When it came 5me for us to change company direc5ons, I had to be dragged kicking and screaming. I did not want to let go of all that code. -Eric Ries 10. Showing abandoned work Attribution to Mike Burrows - @asplake 11. Showing abandoned work Attribution to Mike Burrows - @asplake 12. Dont waste the waste! Attribution to Mike Burrows - @asplake 13. How will we know? 120100 On hold Proposed 80Prioritised Ready for Dev Dev 60Testing Ready for Release Released 40 Implemented 200Attribution to Mike Burrows - @asplake 14. Showing abandoned work Attribution to Mike Burrows - @asplake 15. Deployed, but never used 120100 On hold Proposed 80Prioritised Ready for Dev Dev 60Testing Ready for Release Released 40 Implemented 200Attribution to Mike Burrows - @asplake 16. Whats the point?1. Visualizing abandoned work is a good thing.it provokes discussions that pave the way forimprovements.2. Learn from sunk costs and move on. 17. Sources Kanban, Successful Evolu1onary Change for Your Technology Business, 2010 David J. Anderson, @agilemanager hSp://agilemanagement.net/index.php/kanbanbook/ Startup Lessons Learned. Throwing away working code, Eric Ries, 2009 @ericries hSp://www.startuplessonslearned.com/2009/02/throwing-away-working-code.html You Are Not So Smart. The Sunk Cost Fallacy, David McRaney @davidmcraney hSp://youarenotsosmart.com/2011/03/25/the-sunk-cost-fallacy/ Dont Waste the Waste, Mike Burrows, 2012 @asplake hSp://posi5veincline.com/ The Framing of Decisions and the Psychology of Choice , Amos Tversky; Daniel Kahneman Science, New Series, Vol. 211, No. 4481. (Jan. 30, 1981), pp. 453-458 hSp://www.jstor.org/discover/10.2307/1685855?uid=3739656&uid=2&uid=4&uid=3739256&sid=56280093313 18. Learning to Let Go - Cognitive Bias and Sunk Cost Dominica DeGrandis@dominicadDevopsdaysMountain View 2012