How do behaviors create a fossil record?

Behaviors contribute to creating a fossil record by transforming intangible experiences into physical actions, which can leave enduring physical traces. As Andrew Huberman explains, while our sensations and thoughts perish with us, our actions—like writing or building—can leave enduring marks that become our fossil record. Particularly, only our actions can preserve our existence beyond our lives, since the nervous system deteriorates after death, while the skeleton can remain. This signifies the profound role of the nervous system in converting thoughts, perceptions, and feelings into tangible actions, which can then be recorded, studied, or observed long after the individual has passed 1.