It's not so much avoiding estimating complexity as much as moving from absolute estimates to relative estimates. Arlo Belshee has the best article I've seen on

It's not so much avoiding estimating complexity as much as moving from absolute estimates to relative estimates. Arlo Belshee has the best article I've seen on the subject: http://arlobelshee.com/post/planning-with-any-hope-of-accuracy http://arlobelshee.com/post/planning-with-any-hope-of-accura... However, until you establish reality, all the estimates in the world aren't going to help much. And most customers cannot estimate reality until they are actually in the process. I'm not saying Agile is a silver bullet -- it can go wrong in many ways, and it's not appropriate for every situatoin. However, it's the best we have for its niche.