If a person believes in the Biblical Global Flood, does that necessarily mean he has to believe in a Young Earth?
If so, why?
Belief in a world wide flood and a young earth don’t necessarily go together though for many evangelical Christians who take the Bible literally, they do. It is like belief in a world wide flood and the story of Noah’s ark need not go together but for many Christians they are inseparable. Its all part of the narrative based on a literal understanding of some verses in Genesis.
While I believe in the Bible, I have no need to take Genesis literally and then attempt to make science fit my religious expectations. I have a science degree in zoology and two medical degrees so I’m comfortable with scientific knowledge and its strengths and limitations.