Group 1 - The report outlines four consumption eras in Japan, highlighting the evolution from state-level private ownership to a focus on sharing and altruism in the fourth consumption era [4][7][19] - The transition from the second to the third consumption society marked a shift from family-based consumption to individual consumption, emphasizing personal preferences and quality over quantity [8][30][40] - The report emphasizes that the current fourth consumption society retains characteristics from the previous three eras, indicating a complex interplay of consumption patterns [10][32][36] Group 2 - The third consumption society is characterized by a significant decline in GDP growth rates, with an average of 4.05% from 1974 to 1990 and only 0.95% from 1991 to 2010, reflecting economic stagnation [30][35] - The report identifies five key features of the transition from the third to the fourth consumption society, including a shift from individualism to social consciousness and from private ownership to sharing [9][57] - The rise of non-profit organizations and shared living arrangements in the fourth consumption society reflects a growing interest in altruism and community engagement among the Japanese population [62][65]