First, map gaps. Some of these are just nonsensical, like the example below where some parts of the 1616 Holy Roman Empire are apparently non-entities.

Some are more troubling though. Oceania is a blank space before British colonisation in Australia: the pre-colonial histories of Australia and Aotearoa are relegated to "non-civilisation", erased entirely. Even some known cultures like the Hopewell are absent: the computer is unthinkingly replicating the full colonial model of who gets seen.