This is old hat to those of us who have been trying to address young earth creationism for some years but those who have more recently become interested in the subject might find it useful.
Ken Ham‘s Answers In Genesis organization has a Statement of Faith. All who are involved with that organization, whether as staff or as volunteers, including Ham’s pet scientists, are required to agree to this statement.
The last item in that document includes this sentence:
“By definition, no apparent, perceived or claimed evidence in any field, including history and chronology, can be valid if it contradicts the scriptural record.”
In other words, no matter what evidence is presented, no matter how sound the reasoning, if it contradicts a completely literal reading of the Bible, it can’t be true. This is the opposite of science. It is the opposite of a rational approach to understanding.
So, if ever you read anything from AiG or encounter a creationist who toes the AiG line, remember this: it is unlikely that it will be of any benefit to them if you reason with them or discuss evidence with them because they literally do not care about reason or evidence unless they think it agrees with their narrow reading of the Bible. They will not let facts interfere with their belief.
In my view, the only value in trying to debate with them is that someone who might be watching or listening may not have decided whether or not they believe in Ham and his followers. Maybe such people can be swayed by reason and evidence or, at the very least, perhaps they will decide that it’s a good idea to keep an open mind.