It could not recreate the full social world in which doing it mattered.

This limitation is often forgotten when scholars describe him as an unparalleled anthropological source.

He was unparalleled.

He was not unlimited.

There were things he may not have known.

Things he chose not to say.

Things that could not be translated.

Things that made no sense outside Yahi relationships.

Things he had forgotten.

Things no surviving person had taught him because teachers had died too early.