[ericthered]

Comments on the dreaming worlds:

You will probably learn some things from the other world.

Language will be a big one. Most languages will exist only on one world or on the other. But if you dream about the same person every night, you may learn their language. Which means random chunks of the population will be able to converse with each other.

Cultural exchange will also be interesting: you will learn a great deal about a culture that's not your own.

The specifics of your dream target are interesting. Do Children dream of other children, or do they get taken around to battles, bars, brothels and who knows what else? When your target dies, who do you switch to?

Attending schools and apprenticeships won't be useful if you're not in a state to properly learn what's going on. And you won't get a lot of the physical skills that you need.

I can see newspapers entirely devoted to what's going on in the other world though.