What the mad scientist did,in effect was wipe out the hard drive, put in the other programs from the Shelly Kagan computer, but it's still the very same computer.

疯狂科学家所做的实际上是,清理硬盘，输入来自Shelly，Kagan电脑的其他程式，但电脑还是那台电脑。

耶鲁公开课 - 死亡课程节选