It is always a risky thing, creating a story set in a foreign culture. The typical writer for western television grew up in the west, so while foreign cultures like European nations, or the United States, Canada, or the UK if you are not a native, can be difficult, they are at least similar to the writer's experience.
But when a western writer tries to write about a culture that rose up in isolation from the shared Roman Empire history of the West, be it Eastern culture or Hindu culture or African culture, that writer is often having to learn everything from scratch. If the writer does not care enough to do the research, this can lead to glaring stereotypes and errors.
This is doubly true for stories involving Pre-Columbian America, which does not have any shared history with Europe, Africa, or Asia (unless you subscribe to the African Origins theory, but as that is not the current scientific consensus we won't get into that here.)
So when I say that "The Aztecs", the sixth Doctor Who serial, does a magnificent job of realizing pre-Columbian Aztecs, both the good and the bad, and creates one of the most interesting and thoughtful Doctor Who plots yet seen, or indeed seen since, I want my readers to have a sense for just how impressive that is.
This is one of my favorites, and I may gush. You've been warned.
