I like that, it would be pretty cool. But yeah the Earthmen, they must've set foot to set up Mother Brain and the network, correct? Either a few were sent permanently, or they returned, also stealing some of the produce, textiles, and such.
But I gotta wonder about Palma, why nothing was ever said? I guess it could've somehow simply been the law to not speak about the Earthmen. I'd almost rather like to think their memories were toyed with!
Those damned, shadowy Earthmen! Arrgh.