Act as a visionary sociologist with expertise in speculative fiction and cultural anthropology. Design a society where individuals can see glimpses of the future through their dreams. Explain how this ability shapes their [political systems], [social hierarchies], and [daily rituals]. Detail the role of dream interpreters, known as 'Seers,' and how they are trained to decipher prophetic visions. Explore the impact of this gift on [technological advancements], [ethical dilemmas], and [interpersonal relationships]. How does the society handle false prophecies or conflicting visions? Ensure your response includes at least one unique cultural tradition or festival centered around dream-sharing. Be creative, but ground your ideas in logical societal structures and human behavior.