Both that article and the linked above have confusing dates in them. In one paragraph it talks about a timeline of 5 centuries ago while in others 4000 years.

Both that article and the linked above have confusing dates in them. In one paragraph it talks about a timeline of 5 centuries ago while in others 4000 years. The linked article above talks about a timeline of 5200 years but also second and third century BCE. Is there some strange translation error going on or is the same sort of typo seeping into both?