translation.en: Chris Anderson: Professor, if you had to guess either way, do you now believe that it is more likely than not that we are alone in the Milky Way, as a civilization of our level of intelligence or higher?
translation.zh: 安德信: 教授, 若您必须二选其一作猜测, 此刻您是较相信还是较不相信 我们是天河中唯一 现水平或更高水平之智能文化?