It’s amazing to me that people 40,000 years ago could master boat design, boat building, sails, oars, hulls, navigation, etc but still not have developed a written language.
Maybe they did but no one recognizes it (like the knotted string records of one of the South American civilizations), or it was all scratched onto palm paper or palm leaves that rotted away.
In one of my past professions I was a Journeyman shipwright.
I can and have built large wood sailboats from scratch.
Those ancient guys may not have had the written word, but they had mentors.
...that we know of.
If I had the time, I could cite case after case of orthodox archaeology ignoring evidence, removing access to sites and even destroying evidence which conflicts with the orthodoxy.
I believe that there was an ancient civilization(s) yet unrecognized, evidence of which is on nearly every continent.
It is only a matter of time that it will be demonstrable, and, to that end, I support unimpeded research/study - SCIENCE - absent interference from those who prefer the status quo (hawass among them).
I can design and make all kinds of stuff, but still can't spell. Making stuff is more intuitive than writing.