机器人是一种被编程执行多种任务的设备，并且可以重新编程以执行其他任务。

Civilization is a stream with banks. The stream is sometimes filled with blood from people killing, stealing, shouting and doing the things historians usually record, while on the banks, unnoticed, people build homes, make love, raise children, sing songs, write poetry and even whittle statues. The story of civilization is the story of what happened on the banks.

The world is mostly right. The world is mostly wrong.