There's definitely an really important balance between reserving space for the stuff you want to build. And then on the other side, these days, we have a pretty rigorous process,. which always needs improving, but it's relatively rigorous. You know what happens there? What do they say? Why do they quit? Can we remove those reasons for people to quit in future? A product satisfaction, we do outcome reports for all projectsThese days, whch kind of looks at the metrics that we set to success, metricx. Certainly it's not realy 50 51. Half is the kind of your strategy, the things you wants to build, making sure you've protected rogue map time or