Coleman Ben, Goodwin Dan. Designing UX Prototyping

SitePoint, 2017. — 216 p. — ISBN13: 978-0994347084.It's well known that identifying and fixing problems in design is easier and cheaper if it can be done earlier in the process of design and build. That's because as the fidelity of the project we're working on increases, the effort involved in making changes increases. If we can test out early ideas to see if they work, in small chunks, then we can identify whether those ideas are going to work. To do this, we need to build prototypes.