b) Why are the circles not valid click targets?
c) If you say this -> "To deliver the best user experience, we must deliver content as quickly as possible (<1 second)" then why does your section on Critical Rendering Path show the optimized page load in 1.5 seconds?
And the candidates are, look at the HTML and JS code, write a simulator that can in effect click on each pixel on the page, submit a question to Stack Overflow, click on every candidate spot on the page. May I have the envelope, please (drum roll)? And the winner is, click on every candidate spot on the page! And the winner thanks all the losers and wishes them still less luck the next time!
But, we already knew all this, right?
Was the role in user interface and user experience at Google really that important?
The mouse pointer turns into a hand?