I’m researching inter-dimensional travel, and there is not very much material online about this kind of thing. The same 10 stories re-circulate in the search results. Conversely, We get a lot of inter-dimensional travelers around here. Sometimes you can dress up to attract them. Sometimes you get lucky and bump into the travelers on the street. They move fast, so you don’t know you’ve seen anything until they’ve gone. Inter-dimensional travelers are like that.