Evolution of Language: Deacon vs. Pinker

In considering the evolution of human language, I think it is helpful to contrast these two books, and the ideas presented in them:

Terrence Deacon’s “The Symbolic Species: The Co-evolution of Language and the Brain”

and

Stephen Pinker’s “The Language Instinct: How the Mind Creates Language (P.S.)”

Neither book is exceptionally new, and in fact, [...]