Earlier quoted context omitted.
Why not, though? Would how often, in 100, 1,000, 10,000, or 100,000 years would the complete chain of human intellectual lineage be broken, and a generation of people be raised with absolutely no input from the preceding generation? Look through Wikipedia's page on Indo-European vocabulary ( https://en.wikipedia.org/wiki/Indo-European_vocabulary#Kinsh... ), and see how recognizable some of the fundamental building bl…
I see the link you provided as evidence to the improbability of GP's premise. Consider that common daily used words can change to a degree that they at best resemble their origin, and that in just a single or two millenniums. Do you believe any oral tradition can survive and preserve anything from it's original meaning after 20k years? Do you know any story about your family from 300 years ago? Do you know anyone who…
There's evidence the indigenous Australians passed down knowledge of the end of the last glaciation period [1] 10000 - 13000 years ago.
[1] https://theconversation.com/ancient-aboriginal-stories-prese...