Adam Elga

I'm not confident on the origins of any of this, but I know people have thought about cases in which you're wondering who you are and when it is, certainly long before I came on the scene.

Great.

And actually the Star Trek example will bring up a version of a kind of self-locating thing that people don't often talk about.

I think this is like cutting edge technology.

So I want to get readers on board with it too.

So standard teletransporter case that you step in the teletransporter, that body is destroyed.

The information is transmitted, let's say to the Enterprise and also to another ship,

the Potemkin.

And duplicate bodies are created on each ship.

You wake up and you look around, but the receiving bays of the Enterprise and the Potemkin look exactly alike.

And so you're wondering, am I on the Enterprise or am I on the Potemkin?

And this isn't a question that could be

completely expressed just with objective third person vocabulary.

It couldn't be a question of, you know, specify all the positions of all the particles in the world, specify the full history of time from beginning to end.

Still, some people think there's this residual question.

Where am I?

Which one am I of these two people in duplicate situations?

Um,

Sounds good to me.

Let's add more receiving stations.