If you work in an office with non-dev's -- like QA's, analysts, regular folks -- ask them. And then listen to what they say. As a QA, I frequently have the fol

If you work in an office with non-dev's -- like QA's, analysts, regular folks -- ask them. And then listen to what they say. As a QA, I frequently have the following experience: me: "This won't make sense to people." dev: "Oh, but it has to be this way b/c {reasons}" me: "People are going to get confused. They're going to use it wrong and make errors." dev: "No, our users are smarter than that." {6 months later} dev: "We're redesigning our interface because the users found it too confusing."