You ask, “Why wait till later?” The answer, of course, is that I have a job, a family, a calling in church, and only 24 hours in a day. And I try to actually look things up and think about them before I start pontificating.
I’ll do whatever I have time to do, but I don’t see it as my job to challenge every single proposed evidence for the UM. It seems more economical to pick out some of the UM arguments that appear to be the more important ones, and show that Dean Sessions is playing fast and loose with the facts. I would think that honest people would see that at least as an indication that Sessions isn’t the sort of person one can trust to have done his homework on the topics he writes about.
For instance, how many times in the book does Sessions say that something or other must have happened how he thinks, because melted rock always turns to glass? Seems like an important point in the book to me. And yet, Sessions’ own sources say that crystals (even quartz) have been formed from melts in the laboratory. Does that bother you? Does it make you want to put forth a little effort and look up a few books in a university library to see who’s telling the truth? If not, then why not?
Your book review on the UM website says you are a retired Naval Intelligence analyst. I’m pretty certain you wouldn’t have lasted long enough to retire from that job if you just believed every information source that told you what you wanted to hear. People want a nice story all tied up in a bow, but reality is usually more complicated than that, and harder to sort out. But putting in the effort to understand the nuances, even if we can’t sort out every last detail, makes us wiser. What if, after trying to put in some due diligence, you came to the conclusion that the UM does not provide good arguments? What would you have lost? I wouldn’t think you would have to give up on your religious beliefs. You might come to the conclusion (like John A. Widtsoe in his book Evidences and Reconciliations) that the Flood may have been only a thin sheet of water in some places, or (like Hugh Nibley in his book Old Testament and Related Studies) that the Flood in the Bible was a localized event that was described from the point of view of particular people, and it seemed to them like the whole world was buried in the deluge. You might come to the conclusion that the Flood was just like you thought, but acknowledge that the UM didn’t provide very good evidence for it.