I don&#x27;t want to hijack by focusing on your second footnote, but:<p>&gt; <i>I had a recent debate over whether a border should be 3, 4 or 5 pixels wide, and was asked to prove my case. I can’t operate in an environment like that.</i><p>Can any designers explain why it&#x27;s unreasonable to provide data for a decision when you operate at Google&#x27;s scale, and presumably can come up with that data very quickly?<p>It&#x27;s one thing to override design based on data, and that&#x27;s something that can be argued on its merits. But when the design answer is &quot;one of these three,&quot; why not run the experiment and pick the best?