Planning for Everything: The Design of Paths and Goals

by Peter Morville

In recent years, Eric Ries famously adapted Lean to solve the wicked problem of software startups: what if we build something nobody wants?[41] He advocates use of a minimum viable product (“MVP”) as the hub of a Build-Measure-Learn loop that allows for the least expensive experiment. By selling an early version of a product or feature, we can get feedback from customers, not just about how it’s designed, but about what the market actually wants. Lean helps us find the goal. Figure 1-7. The Lean Model. Agile is a similar mindset that arose in response to frustration with the waterfall model in software development. Agilistas argue that while Big Design Up Front may be required in the contexts of manufacturing and construction where it’s costly if not impossible to make changes during or after execution, it makes no sense for software. Since requirements often change and code can be edited, the Agile Manifesto endorses flexibility. Individuals and interactions over processes and tools. Working software over comprehensive documentation. Customer collaboration over contract negotiation. Responding to change over following a plan.