A billion years from now life on Earth may be primarily social, and stuffed with parasites and symbionts; and the world economy may be primarily a crowded network of alliances.

• 十亿年前地球上的生命起初可能就以群居为主，充斥着寄生和共生关系；其配置最初也大概是挤满了大小联合体的网状结构。