With the developments in the last two (and specifically the most recent) episodes, this show has undeniably moved into SF&F territory.
This episode was rather unsettling. Again. Roots comment about handing a five year old the keys to a jet airplane really illustrated what would happen if any one of these groups were to acquire access to the Machine or an equivalent. I picture scenes from Dollhouse's Epitaph episodes. Now that Decima has the Samaritan tapes, I imagine we'll be working towards their plot as the season continues.
The Machine itself is getting very creepy; from speaking, through Root, about protection and it's act of saving us to it's compassionate and emotional presentation of Arthur's life. I'm not sure I like the idea of becoming this things pet.
The last five episodes have been some excellent television.