Now I will play my tune, one which I did not hear as a child. Or maybe I heard it and forgot.
(John Abercrombie, jazz musician)
Western scholars run the risk to be misled by the rhetorics of originality when they judge about Indian philosophy and the contribution of each thinker.
We like what is new and "original", but only insofar as we can relate to it because it is also familiar (I guess: 95 percent familiar and 5 percent new). An "invention" is first of all a "discovery" (in-venio) and what is "original" is "originary". Indian thinkers just had a different narrative about it.
On originality see also this post.