>Google sought to downplay the significance of the move by noting the company conducted “tens of thousands of experiments in Google Search” every year.

Assuming it's not just simple A/B testing, I'd be interested in a list of these tens of thousands of annual experiments to see what Google has been up to. It's messed up to think that even just searching Google on any particular day could be more or less accurate/helpful because we're in the middle of some experiment we never explicitly consented to.