Why People Matter
http://www.uxmatters.com/MT/archives/000017.php

Quesenbery, Whitney
UXmatters
2005

Abstract:

I view a user experience as a conversation between people separated over the distance of time. At one end of that conversation are those who create the product; at the other, the people who use it. In between is the product itself--with a design that either helps or hinders; creates a barrier-free interaction or shouts in an unfamiliar language. Because this conversation does not happen in real time, we are not there to smooth over the rough spots and make sure that we have spoken clearly. Instead, we have to build our understanding of those users into every aspect of the design, by putting people--users--at the center of the design process.