They tell us something specific and important about the early diversification of Native American populations.

They do not tell us everything about that diversification, and the subsequent research that has built on and complicated the 2018 findings demonstrates that the story is more complex than the first publication could have revealed.

The Weight Of A Tiny Skeleton

All of the genetics and all of the demographics and all of the population tree diagrams and all of the routes and dates and model comparisons eventually return to a specific physical reality: a very small skeleton, found in a prehistoric hearth in Alaska, belonging to an infant who had lived approximately six weeks to three months and who had been buried with the care that the people who loved her could provide.

USR1 was a person.