Thank you for this very helpful summary. At a recent Zen retreat there was discussion of the fundamental human fear of losing group attachment…community, tribe. Really an existential threat to one’s being, as we are so fundamentally social. Someone who has taught in many parts of the world said that one of the biggest and most troubling surprises for her has been realizing how much greater this fear is among Americans, just terribly, terribly afraid of and/or suffering from a sense of expulsion from community, or simply not having it at all. And so: lots of depression.