Anatomically modern humans represent an evolutionary, biological, and cultural synthesis of our genus. Genetics has helped us to discover and compare a multitude of hybridisations among the populations that lived and coexisted with Homo sapiens out of Africa.
We can support the idea that creativity in social and human sciences benefits more from preserving a plurality of scientific production spaces than from a single homogeneous space, which usually tends to fall into complacency.
There was a time when Homo Sapiens coexisted with other species of the same genus such as Homo neanderthalensis or Homo denisova. However all the groups were very small. Today we determine two pieces of evidence: we are now alone as a species (1) and
You probably remember Steven Spielberg's 1977 film Close Encounters of the Third Kind in which, in a memorable final scene, humans communicate with aliens with music, specially with that well known "D E C C G" melody that would be later hummed by everyone.