In Greece mythology there is a ‘liminal being’ that represents the combined strengths of two different entities — horses and humans. The centaur's half-human, half-horse composition has led many writers to treat them as liminal beings, caught between the two natures they embody in contrasting myths; they are both the embodiment of untamed nature, as in their battle with the Lapiths (their kin), and conversely, teachers like Chiron. Wikipedia Humans, as hosts for technology, are ‘prosthetic gods’. ‘Prosthetic gods’ are a form of ‘liminal being’ like centaurs. Humans do not want to settle for natural competencies. They want to be unnatural, with greater abilities and capabilities than granted naturally. They want to be integrated or unified with their favored technologies: Man has, as it were, become a kind of prosthetic God. When he puts on all his auxiliary organs he is truly magnificent; but those organs have not grown on to him and they still give him much trouble at times....
An accidental vagrant is a traveler who has been accidentally blown of course or who has intentionally strayed. Accidental vagrants fill existing niches or establish new ecosystems. They cross-pollinate the fruits of creativity and innovation.