Engineers left in a vacuum might say "well, that's maybe not so important; we can get a better signal by doing it the other way so let's do it that way." So, left to their own devices, that would be the way the product would end up. So you have to have a really strong voice supporting the user. I think the idea of focusing on that is uniquely Apple. In an optimistic sense you have to say that still exists at Apple. It does.

Great Read :

What I Learned Working With Jony Ive's Team On The Apple Watch