Questioner
I have a question about the cosmere, and Hoid specifically. The way that he is worldhopping, is he using Cognitive and *inaudible* Realms?
Brandon Sanderson
The times you have seen him worldhop, it has involved shardpools, or perpendicularities, as we call them. He is using primarily the Cognitive Realm.
Questioner
Because, from what I understood from Secret History, that he's going through the shardpool, from the Cognitive to the normal Realm.
Brandon Sanderson
Yeah, he's traveling through the Cognitive Realm, and then jumping back to the Physical one, once he's where he wants to go.
Questioner
So, I'm guessing what's going on, though, is that he's travelling between planets using the Cognitive and coming out from the shardpool to the Physical Realm?
Brandon Sanderson
Yes, that is exactly right.
Barnes & Noble B-Fest 2016 (June 11, 2016)
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See also footnotes 21 and 22 https://coppermind.net/wiki/Vivenna