I'm wondering, is there any motivations to use "Rata" instead of "Quora" as prefix of city names?
This is pure theory crafting, but I think that Rata refer to cities having a cube within them. (Sum, Primus and Novus), for the last two ones: Rata Arcanum and Rata Pten weren't finished.
Considering the wiki, they are 6 huge subterranean asuran capitals, Quora Sum was one of them.
I think Quora define the most advanced cities (prior to Primordius awakening). Quora Arcanum, Quora Novus or Quora Hortus also sound great as possible names.
Whereas Quora Sum was wiped out, I don't think it was the case with all of them. Different cities mean different peoples and so surely different minds. I can perfectly associate one of the city concentrated on Security, another on Education and a last one simply based on Surviving using natural resources ala Rata Novus. Surely some may like to be connected to others but some want to stay hidden.
What about the building dates? We don't know a lot of things, Rata Novus felt in 1173 AE, the date 1147 AE is engraved on Rata Sum, imagining, it's the building date.
"It's been 751 days since a hazardous incident. Outstanding job, Rata Novus!" Dialogue may indicate the city was built in 1171 AE.
Rata Arcanum end was in 1175 AE, at least it was when Zinn died. Rata Pten was old, having writing describing orr before cataclysm (before 1071 AE).
No date concerning Rata Primus but the advancements are similar to Rata Sum, so approximately built in same time.
But we have again a dialogue, intentional or not: "PA Announcer: Attention, krewe. Eighty-seven days have elapsed with no reported lab accidents or security issues."
So less than one year. The first step of that episode takes place in 1331 AE, putting Primus as most recent. It kinda question us about the Asuran capacities in building cities. If Rata Primus is made in 3 months, surely Rata sum too.
So the Quoras are probably more than old compared to our character (1325 AE, we have around 22 years old I would say), Primordius awaken in 1078-1120 AE, so the cities are more than surely older than that date.
So to sum up, ??? Quora Sum -> Before 1071 AE Rata Pten and Rata Sum -> 1171 AE Rata Novus -> 1173 AE Rata Arcanum -> 1331 Rata Primus
So it would mean that Rata Novus is more recent than Rata Sum? Sure that 1147 inscription is wrong. Or the ambient dialogue shouldn't be considered.
I think Rata Sum building date is also before 1071 AE.
Happy if someone correct any mistakes in chronology, I'm just wondering how old are the different cities.
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