Just to come back on topic, can we conclude that for every people that have reacted so far, the bible is needed to arrive at YEC? If we all agree on that (it's the impression that this discussion gave me), then we can move to other topics?
Only within the context of our culture. I suspect that if one were to quiz a selection of aboriginal peoples around the world, one would probably hear a variety of creation stories that were related to a time frame understandable to them - ie. possibly thousands of years as opposed to billions.