But imagine a world filled with people over 100 years old. If our developments are only technological, if we don't also make appropriate changes in our social structure, psychologies and lives, longer lives will likely mean greater problems.
事實上，想像一個百年人瑞滿街跑的世界，如果只有科技單方面的進展，而沒有社會制度與人類心理與生活的相對調適，人類活得更久，可能會面臨更多問題。