As an engineer, it's easy to look at every problem and think to yourself: "There is a perfect solution for this, we just haven't found it yet."

Yet, as the years go by, I find myself accepting a less idealistic answer: Maybe there isn't. Maybe the problem space is just so complex that no one (humanly feasible) general solution exists for all forms of it. If there's one thing that this is true for, UI is probably it.