The document discusses the concept of post-demographic consumerism, where traditional demographic segments like age and gender no longer reliably predict consumer behavior. It highlights that consumers now act based on individual preferences and experiences rather than conforming to group identities, compelling marketers to adapt their strategies accordingly. The text outlines four driving factors behind this shift—access, permission, ability, and desire—while suggesting practical tips for marketers to connect with diverse consumer tribes instead of relying solely on outdated demographic methods.