Now I know why I went to Burgettstown in 2012. It all makes sense.
I felt that the band was extraordinarily experimental during this show, particularly during Down With Disease, which was a treat for me, because of my personal connection with this song. Really, though, the band was very generous with improvisation throughout the entire show. Yet, the band maintained a cohesiveness, as if unified by something physics can't explain, yet. Somehow, this show made me feel a part of that cohesiveness.
As always, thank you Phish!