Hey To All My Local Pals, Here 
Recently, I watched a totally fascinating LocalU video in which Mike Blumenthal introduced a hypothesis that there may be a way to analyze what, specifically, is triggering a specific local pack. Now, Mike is stating that correlation is not causation in explaining this, but basically what he starts talking about at around 4:40 in the video is that what you are seeing rank well in the local packs may be demonstrably caused by what you see ranking organically beneath the pack, or may be caused by totally different signals.
Mike says,
_"If you're seeing the top 10 results are all IYP industry sites, and there's a pack showing, and the highest local site is 24 or something in organic, it's unlikely that that's what's triggering the pack. And so then you want to look at third-party triggers and see if that's what's actually triggering the pack." _
Obviously, all of us who do Local are familiar with the idea that a tremendous variety of elements contribute to pack rankings, but I am particularly intrigued by the idea of looking at the organic result beneath a pack and determining that there is little or no correlation between them, and this then driving one to look elsewhere for contributing factors.
In a recent response to another thread here on Q&A, I discussed some common local pack ranking failure causes when organic rank is high. What I'd love to see is whether, if you look at some of your clients' desired packs, can you tell if organic signals are driving them, or can you see that it's not organic signals driving the pack, as Mike suggests. What, in those cases, does appear to be driving the packs?
I'd be so interested in a discussion on this. What do you see? What do you think of Mike's suggestions?