Neo-tribes are not tribes in the strict anthropological sense – the tribes which populate the Amazon, for instance. They are tribes in a metaphorical sense of the word, as described in books with titles such as "Tribal Revival", "Radical Ritual", "Compass of the Ephemeral", "Walking Dream", "On the Edge of Utopia", "Enabling Creative Chaos", "Inspired Madness", The Quest for Autonomy", "The Visionary State", "The Immeasurable World" etc., the sheer number of which is revealing enough of a major sociological shift.