Well, there's definitely something to be said for filling in the blanks with your own narrative. Nobody had mentioned the robots studying/experimenting on humanity up til now and it's probably my favourite section of the vid. The last few shots are all cylons or in the case of the baby half cylon, thus it's the robots developing more compassion as the humans spiral downward committing more and more acts of violence. The dead blonde represents the machines becoming mortal and thus taking over from humans altogether.

The Galapagos Tortoises are such an iconic part of Darwin's research that I couldn't resist using the TSCC ones to show not only compassion but also the way in which the evolutionary baton is passing from humanity to robots. The Snakes and apples were specifically meant to call to mind the garden of Eden and starts with Weaver and a snake (she even has a moray eel in her office) representing the serpent in Eden and then switches to Cameron with the apple (temptation, Eve) then to Roslin and the snakes(humans are now the serpents.)