"There are a whole series of standard opinions in the Indological literature, which are regarded as expressions of proven research results and are adopted in this capacity from one book to another to this day, without anyone believing that they need to be checked again against the source material and/or in the context of newer research and hypotheses. One of these standard opinions is the view that the population that the Arya encountered when they immigrated to India was radically different from them, especially in terms of their external appearance."