Don make a good point that too many people take everything to literally. At risk of sounding like I am preaching. For me, I couldn't begin to understand the mind of God and how things were set in motion nor do I try. I do know it wasn't literally seven days and I am sure most other Christians feel the same way so I take no offense in any manner. The nature of the physical world can be described in an orderly and elegant manner via Mathematics that does not compromise my Christian beliefs in any manner. Only strengthens them actually ..
so no offense is and should ever be taken.