The wonder is appropriate.

It reflects something true about what this kind of science accomplishes.

It is not that we can recover what is lost — the voice, the experiences, the relationships, the specific knowledge of a Neanderthal woman who lived in the Zagros Mountains during the last Ice Age.

Those things are gone.

Seventy-five thousand years is, in human terms, almost incomprehensible.

The span from the death of Shanidar Z to the birth of the first pharaoh of Egypt is longer than all of recorded history.

The span from there to now is longer still.