The Unfolding of Language, Guy Deutscher describes the evolution oflanguage
for - follow up - book - The Unfolding of Language - to - internet archive - The Unfolding of Language - https://hyp.is/UksPQBtgEfCEqneUXW_HOA/archive.org/details/guy-deutscher-the-unfolding-of-language-an-evolutionary-tour-of-mankinds-greatest-invention