Why do Asterix and Obelix mistake Proto-Eastern-Algonquians for Roman colonists? Because up until then, the Roman Empire was the only context wherein they had met people who spoke non-Indo-European languages.
Unhygienix insists on ordering fish from Lutetia rather than catch fish himself from the sea on the grounds that all the best fish gets to Lutetia. The trouble is, Lutetia (Paris) is over one hundred miles from the sea, and in the time of the books (50 BC) the journey would take two weeks by ox cart. By the time the fish arrives in Unhygienix's shop, it's been caught in the sea, carted to Lutetia, and then carted all the way to Armorica. And there was no refrigeration technology in 50 BC. It's a wonder that Unhygienix's fish hasn't dissolved into mush.
