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In page Semiotics:

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In contrast to this, human understanding adds to the animal Umwelt a relation of self-identity within objects which transforms objects experienced into 'things' as well as +, –, 0 objects.[2][3] Thus, the generically animal objective world as Umwelt, becomes a species-specifically human objective world or Lebenswelt ('life-world'), wherein linguistic communication, rooted in the biologically underdetermined Innenwelt ('inner-world') of humans, makes possible the further dimension of cultural organization within the otherwise merely social organization of non-human animals whose powers of observation may deal only with directly sensible instances of objectivity.[citation needed]