you mean because all the bones are locked away by museums, so no analysis can actually be done?
check out the role museums play in keeping historic artifacts and ancient knowledge from the public. They will grab up a collection of artifacts, deem them "ordinary," then lock them away in their archives where no one can touch them.
Next do the Vatican.
The common man is never taught there are tens of thousands of Out of Place Artifacts at larger museums in the US. And still fairly common at many smaller museums in other countries. Combined they well establish the commonly accepted history of ancient humanity is complete bullshit.
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