Some concise and worthwhile thoughts on design and designers from Kevin Fox, taken somewhat out of context:
Data-driven design is a vital tool for hill-climbing iteration of a site, but you should take great care not to use it as an appeals process whenever you and your designer reach an impasse. It sidelines the designer into being no more than a brainstormer, devoid of design ownership…Also please keep in mind that everyone has opinions on design, and that your UX professional has devoted years of their life to learning to separate their subjective opinions from their objective understanding about how the larger audience will interpret an interface. It’s not as demonstrable as code that passes unit-tests, but trust in it anyhow.
View Dave's LinkedIn profile