The specific fate of the Ancient Beringian lineage in the thousands of years after USR1.

The genetic profiles of any other individuals in USR1’s community.

One genome is a powerful data point.

It is also one genome — one individual, representing one moment in a long and complex population history, sequenced to a depth that allows population genetic inference but not genealogical detail.

The conclusions that can be drawn from it are probabilistic and population-level, not deterministic and individual.

The appropriate response to the USR1 findings is neither to dismiss their importance — they are genuinely significant — nor to overclaim their reach.