*Gojko is a bit of a phenomenon here in London* No kidding.,
This review is from: Impact Mapping: Making a Big Impact with Software Products and Projects (Paperback)
Whilst I have read many of his books, I have never met him(or twigged these books were by the same person), At NDC In London today, went to his talk on Impact Maps and Story Maps - WOW!
Of the week so far, this will have the longest lasting impact of the projects I work on. He is very insightful and whilst 'everyone is agile' what actually works?, why do one thing over another?, why continue with the backlog?
What many forget is Business Value more over how to bring this into monolithic sectors such as large banks (Bankan vs Kanban ). So what you get out of this is how to deal with a vastly changing context, a Agile GPS project navigator. You can see how to navigate to your goal in a constantly changing world. This also helps verify User Stories from 'As a Trader I wanted to be able to trade' to something that is measurable using formula like "??? can help us to achieve ??? by ??? Faster/Cheaper". Using Stories Maps as the antithesis of an Impact Map to reverse navigate to help choose what works. This also helps you slice and bundle features. Also see the book "ADAPT!"(Adapt: Why Success Always Starts with Failure) that explores the Palchinsky principles that form a foundation of the book in adaptive planning. This book is great, but if you can get to one of his talks then that will fire you up no end or go to his Product Owner Survival Camp events.