The Concepts of Productivity and Displacement as They Are Applied to Human Language
. . [W]hen it comes to how language began, displacement is a factor far more important than arbitrariness" (Derek Bickerton, 2009). "There is just one striking exception. A honeybee scout which has discovered a source of nectar returns to its hive and performs a dance, watched by other bees. This bee dance tells the watching bees what direction the nectar lies in, how far away it is, and how much nectar there is. And this is displacement: the dancing bee is passing on information about a site which it visited some time ago and which it now cannot see, and the watching bees respond by flying off to locate the nectar. Startling though it is, the bee dance is, so far at least, absolutely unique in the non-human world: no other creatures, not even apes, can communicate anything of the sort, and even the bee dance is severely limited in its expressive powers: it cannot cope with the slightest novelty (Robert Lawrence Trask and Peter Stockwell, 2007).
Derek Bickerton, Adam's Tongue: How Humans Made Language, How Language Made Humans. Hill and Wang, 2009
Robert Lawrence Trask and Peter Stockwell, Language and Linguistics: The Key Concepts. Routledge, 2007