P.U.N.K.: The Attributes That Define a Great Product!

TL;DR

A framework for evaluating products across four dimensions: Proposition (does it offer something unique?), Usability (can people actually use it?), Necessity (does anyone need it?), and Kansei (does it evoke the right emotional response?). Google Glass is dissected as a case study of a technically impressive product that failed most of these criteria.