The ancient genomes from Lapa do Santo that have been analyzed in the context of the Population Y research were drawn from this well-documented archaeological context — individuals whose burial practices are known, whose dating is established by multiple radiocarbon measurements, and whose relationship to each other and to the archaeological layers they come from is carefully documented.

This contextual richness makes the Lapa do Santo ancient genomes particularly valuable data points for the Population Y debate, because the genetic findings can be related to a specific archaeological context rather than floating free of any interpretation.

The results from the Lapa do Santo ancient genomes — Native American ancestry, complex signals when analyzed for Population Y, evidence of continuity with later populations in the region — are discussed in detail elsewhere in this article.

The point here is that those results come from a specific, well-documented human context that gives them meaning beyond the statistics.