OOPS! That link is off the net now! But I have the info already if anyone is interested.
Now, the specialist have found proto-Sumerian scripture in Peru and Bolivia far away from Mesopotamia!
www.geocities.com/webatlantis/fuentemagna.htm
http://pub69.ezboard.com/fancientlosttr ... D=16.topic
www.geocities.com/Tokyo/Bay/7051/Awen3a.htm
www.geocities.com/Tokyo/Bay/poko2.htm
www.geocities.com/Tokyo/Bay/bpokotia.htm
So, when people have linked Chinese with Sumerian scripture and you find proto-Sumerian language in the Andes where you never suspected cos you never read such a thing (and then you discovered Egyptian mummies had cocaine and nicotine and were not mere droppings as critics imagined, coca from where?), then you may ask if Chinese/Sumerian maybe related to language of the Incas. Could it be possible? Of course if homophonous words are found the "experts" will say they are mere coincidences or false cognates sometimes ignoring the roots and the fact they are not just similar words bt do have same meaning:
www.zompist.com/proto.html#chinesequechua
Regarding Basque, for example, the linguists admit they know too little and yet we need to understand the history and geology also hidden behind the fact in Caucasian mountains there's a dialect of that language spoken in Spain! Yet, some dogmas have to be preserved all in behalf of "science" and ignorance....