So after listening to some excellent podcasts from Shardcast and their musings on the weirder things in the cosmere, I was struck by a theory about the term "Vax". There have been other posts here about Vax and various explanations, but the comments were closed, so here goes. I believe that Vax IS a location...in the Beyond/Spiritual Realm. Going off of Ati's last words before he goes to the beyond, he dies, shows up in the cognitive realm, looks around, and asks (mostly to himself) "Vax?", gets suckerpunched by our pal Kelsier, and stretches away to infinity. I think he was expecting to be in the beyond, and that it is possible for some, probably just shards, to travel there and back. Adonalsium could probably do it, so why not the shards? Brandon has said in the Arcanum that investiture works differently in Vax than other places, and considering the spiritual realm is the source of all investiture, I can't help but think it makes sense. Your thoughts?