There is a difference to be made between specific discoveries and overall progress as a world civilization. It seems strange to say that nothing was discovered

There is a difference to be made between specific discoveries and overall progress as a world civilization. It seems strange to say that nothing was discovered simply because it didn't have a lasting impact. It may be accurate to say the Western world hadn't discovered it, or learned of that discover by others, or that the discovery was lost, but not that it wasn't actually discovered. It's the pinnacle of "Not Invented Here" Discovery and influence or impact simply aren't the same things.