The precision of the calibration matters because it affects the specific claim about where in North American prehistory the Arlington Springs individual falls.

A date of 13,000 calendar years places the individual near but slightly before the main Clovis horizon; a date of 12,000 calendar years would place the individual after it.

The calibrated range for Arlington Springs — approximately 12,710 to 13,010 calendar years, using the calibration available from the published work — places the site squarely in the Clovis horizon or slightly preceding it.

This chronological positioning is significant: the Arlington Springs individual was alive at approximately the same time that Clovis hunters were using their distinctive fluted points elsewhere in North America.