 Some authors, however, object to the use of the term to refer to people, as they question whether there really is any biological or cultural shared ancestry between all Austronesian-speaking groups.This is especially true for authors who reject the prevailing "Out of Taiwan" hypothesis and instead offer scenarios where the Austronesian languages spread among preexisting static populations through borrowing or convergence, with little or no population movements.Despite these objections, the general consensus is that the archeological, cultural, genetic, and especially linguistic evidence all separately indicate varying degrees of shared ancestry among Austronesian-speaking peoples that justifies their treatment as a "phylogenetic unit."