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Why do they have such unusual names instead of English names???

Carla, Arthur's wife, is involved in choosing a lot of the names. She's Italian, and so many names are Italian. In addition, Arthur likes 'geeky' names, such as Linux - after all, they are little people who live in your computer. smile

Other names are, I think, just made up for fun.
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To err is human; to arr is pirate.