An indicator has a value when it’s indicating something. But if it’s not indicating something, it shouldn’t be there.
It’s one of those funny things – you spend so much more time to make it less conspicuous and less obvious. And if you think about it, so many of the products that we’re surrounded by – they want you to be very aware of just how clever the solution was.
When the indicator comes on, I wouldn’t expect anybody to point to that as a feature, but at some level, I think you’re aware of a calm and considered solution that therefore speaks about how you’re gonna use it. Not the terrible struggles we as designers and engineers had in trying to solve some of the problems.
via Hack Design