tedster - 7:21 pm on May 10, 2013 (gmt 0)
Why exactly would that "slow process of new data integration" cause bouncing rather than just a stable shift in rankings?
Because it's not just data integration, it then involves statistical sampling of various SERPs. There have been strong indications of Google developing something like this since well before Panda. Deep charts of the SERPs have shown wave like fluctuations that look almost like astrophysics or even quantum state equations to me.