The purist view of history vs the allegory of a confluence

A purist view of history is history in its true original form. It is the history that hasn’t been affected by the words of people and has;t been altered by people over time.

The allegory of a confluence is the opposite. Let me explain this by using the example given by the authors. A river begins at its origin and flows through various places that have different compositions before it reaches the sea.

The authors say that the essence of the river is like a confluence. The composition of the river that merges into the sea isn’t the same as the river at the origin.

They say that a confluence is a river that carries forward the ideas of various cultures and different kinds of people as the knowledge is passed on from one person to another. It does not end up staying true to its original essence.