"In many instances, OR makes sense. "

Well, if you start with a strong immutable belief that a certain book must be taken as an exact literary explanation of the creation of what you live in, then things like radioactive dating, etc are unnecessary complications.

Once however you do decide to accept that one - then you end up with enormous confusing complicating intellectual contradictions - William was just trying to make the intellectual processes simpler, and thus less difficult to grasp - So was Galileo... and look what happened to him - 600 years to get his idea formally accepted by the Church...