He already did, human factors and the need for consistent performance, even if that means that the lack of speed in performance is consistently bad is in it's own way an advantage. The fact that we now have wildly inconsistent performance depending on the pages we're viewing is bad in terms of human factors. If you want precise scientific references try google but these are basic known facts.

Overall I'm not sure how I feel about this topic myself but I do understand jblow's point and somewhat agree with his rant.