Everything

 I think the world has to expand to make room for the people falling in to it.

They’d be so confused. Someone needs to be their shepherd.

But that shepherd couldn’t be everywhere.

And, I think there would have to be a place, somewhere , where more people “slipped” through, so to speak, than other places.

Why are they slipping and sliding?

Probably death.

Death. 

What would the world do with them?

What would a town do when people just started APPEARING, speaking of another world they were just in? 

Exploit them probably. Isn’t that what humans do?

Something awful awaits these people. 

Unless they’re found by the shepherd. Unless they are allowed to leave.