I dunno, I remember going to a talk at SXSW in 2011 about how A/B testing helps you reach local maxima but you need more to reach the next “peak”. I believe the story about Google testing 40 shades of blue was also in common currency back then.
I don’t think any of this stuff is new or undiscovered, really.
Well, I don't think anyone anticipated the "dark patterns" stuff at the time-- that we could be training technology to be kinda-evil in a way that would have massive consequences-- national political, reputation, etc.
I don’t think any of this stuff is new or undiscovered, really.