I think that this is often a case of "history is written by the winner".
What I mean is that our view of history is often written from a western perspective, and therefore biased in favour of western civilization.
As a consequence of this, when we learn that something we had previously thought to be true, might not actually be true, it is likely that the new information portrays western civilization in a less favourable light.
What I mean is that our view of history is often written from a western perspective, and therefore biased in favour of western civilization.
As a consequence of this, when we learn that something we had previously thought to be true, might not actually be true, it is likely that the new information portrays western civilization in a less favourable light.