Alan Templeton for example notes that this confusion has led to the error that gene flow between different populations was added to the Multiregional hypothesis as a "special pleading in response to recent difficulties", despite the fact: "parallel evolution was never part of the multiregional model, much less its core, whereas gene flow was not a recent addition, but rather was present in the model from the very beginning" (emphasis in original).
Alan Templeton, na primjer, navodi da je ta zabuna dovela do greške gdje je genski tok različitih populacija dodan u multiregionalnu hipotezu kao "posebno zastupanje kao odgovor na nedavne poteškoće", unatoč činjenici da "paralelna evolucija nikada nije bila dio multiregionalnog modela, a najmanje njena jezgra, dok genski tok nije bio noviji dodatak, već prisutan u tom modelu od samog početka" (naglasak u izvorniku).