They would wait there for three decades before the technology needed to test them properly would exist.

What Orr could not have known in 1962 was that the bones were older than his estimate.

Significantly older.

The charcoal date of approximately 10,000 radiocarbon years was accurate for what it measured, but radiocarbon years and calendar years are not the same thing, and the calibration curve that converts one to the other involves complexities that were not fully worked out in 1962.

The true age of the Arlington Springs individual, in calendar years, was something that later science would have to establish.