The 20 percent Fertile Crescent ancestry in NUE001’s genome could reflect admixture that happened hundreds of years before his birth — population mixing that had been fully absorbed into the Egyptian genetic background long before he was born.

It does not tell us what he looked like in any specific detail, what language he spoke, what gods he worshipped, or how he lived.

These things are not encoded in the genome in ways that the current analysis can recover.

It does not prove that all ancient Egyptians had similar ancestry proportions.

NUE001 is one individual from one site at one moment in time.

The variation in ancestry across the population of Old Kingdom Egypt — between different regions, different social groups, different time periods within the Old Kingdom — cannot be inferred from a sample of one.