He may be a PhD, but his theories are fringe and widely disputed. His dating of the Sphinx seems solely based on certain erosion patterns and are not supported by other evidence.
If an unknown long-dead civilization existed, I would think that their writing system and it’s influence would be one of the easiest ways to recognize them. Writing tends to be our best source of information on ancient civilizations. So it’s more plausible to me that if there’s unknown civilizations, then they lacked meaningful use of writing.
If an unknown long-dead civilization existed, I would think that their writing system and it’s influence would be one of the easiest ways to recognize them. Writing tends to be our best source of information on ancient civilizations. So it’s more plausible to me that if there’s unknown civilizations, then they lacked meaningful use of writing.