My claim is that this idea that Japanese and/or Korean can be shown to be related to any other known language is very much a minority and/or fringe position, he

My claim is that this idea that Japanese and/or Korean can be shown to be related to any other known language is very much a minority and/or fringe position, held by few mainstream historical linguists. (My only source is held by that I am a professional linguist and sometimes travel in circles that care about such matters.)