Throughout TWoK, Kaladin complains that he is cursed. When others call him lucky, he thinks about all the times he has failed to protect people and considers himself unlucky. Everyone around him dies.
His Journey in that book takes him to Bridge 4, the bridge team that has the most losses, that everyone knows is a death sentence. Death being the end of every journey, this is appropriate.
But what I've never really noticed before is the importance of the bridge number. 4 is, in East Asian cultures, considered unlucky or cursed. In Chinese 4 is nearly a homophone to the word death. Buildings will skip the 4th floor, companies will skip from version 3 to version 5 of their products (Palm, OnePlus, I'm sure there are other examples but I can't think of them right now).
We already know that The Stormlight Archive finds some of its inspiration in anime/manga. We know that the Alethi are what we would consider ethnically East Asian. Dark hair, tan skin, and they don't have the large, round eyes of the Shin. It seems very fitting that the least lucky bridge, the one responsible for the most death, is Bridge 4.
Of course, Kaladin comes to believe he isn't cursed as he uses his powers to defend his bridgemen. 4 becomes the most envied bridge as they suffer the fewest deaths, have camaraderie, and eventually become squires to a radiant.
They are numbered unlucky and cursed, but turn out to be the most "lucky" of the bridge crews.
This all struck me today because at the end of Oathbringer, Dalinar casually mentions that his personal guard from Bridge 13 isn't there because that bridge crew became Teft's squires. 13 is the number in Western culture that we consider "unlucky" or "cursed," so fitting that it would be the second bridge crew to become squires of a Radiant! With that realization, everything about Bridge 4 clicked in my head.
Did anyone else catch this, or notice anything else cool with these numbers?
A lot of things fans find are coincidence...but neither of these are, actually. Those are both intentional, as are a few other little numbers things.
Numerology has not become a big thing in Stormlight during the development of it, but original (2002 version) The Way of Kings leaned a lot more heavily on numerology (gematria style word/number interactions) and that's still around in the world.