Re-usable components, elements and patterns, the Holy Grail on UX Design.

“Imagine a website with a beautiful, enticing, full-screen image, where a transparent button leads to pages of well constructed, adaptive content. The navigation functions perfectly across devices, switching from a horizontal to a mobile menu at just the right times. Unfortunately a large portion of the potential audience lives in Africa, and won’t have the bandwidth to use it. Does that mean our best practices failed us? No, it means that an experience is made up of more than the sum of its parts.”

(Brendon Cornwell a.k.a. @bcornwell ~ The UX Booth)