Link: Shape Up: Principles of Shaping
Pretty good read so far, but I’m just getting started.
Over-specifying the design also leads to estimation errors. Counterintuitive as it may seem, the more specific the work is, the harder it can be to estimate. That’s because making the interface just so can require solving hidden complexities and implementation details that weren’t visible in the mockup. When the scope isn’t variable, the team can’t reconsider a design decision that is turning out to cost more than it’s worth.