What would make real life "undo" possible?

This isn't possible without a huge uptick in technology. You certainly can't go back in time, because that would violate, among other things, causality. Also, going back in time wouldn't help, because you'd still have the past you screwing up the answers to those questions. The alternative, by the way, is to kill your past self - but then that would kill your current self, and so we enter yet another paradox.

So let's get creative. There has been talk of turning people's biological bodies into mechanical ones, and turning brains into computer hard drives. I think this is possible within, say, 50 years - for perhaps a handful of brain cells. On a scale as large as the human brain, it's going to take us a lot longer. However, if you devoted all the resources in the world to this task, you could speed up the process a lot. So let's say that all the relevant people in this scenario have computers storing their memories, emotions, and personalities. But they still, for some reason, have normal bodies. Creepy.

If you mess something up (although at this point, the question would be more like, "Honey, does this new chip make me look slower?"), there's an easy solution: Modify the hard drives storing the person's memories. Make them unconscious, then use some programming to turn that memory into whatever you want it to be. It won't change your actions for the rest of the world, but you can "change" your actions for all who observed it.

posted almost 10 years ago

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