“So has someone ever pointed out to Ken Ham that his argument against an old earth is “you weren’t there, so you can’t be sure of what happened” also applies to the jotting down of Genesis?”
Many times. And like the thoughtful, intellectual person of integrity he is, he ignores it and goes right on blathering his stupid, irrational “theories”.
As for those who are advising a more mild-mannered approach to the schism between creationists, real science and religion itself - You have to factor in this cold, hard fact: MOST religions, no matter the denomination or dogma or “diversity”, have this in common: They nurse and reinforce a paranoid, self-pitying persecution complex in their followers, a knee-jerk “I’M BEING ATTACKED FOR MY HOLY WONDERFULNESS !!!” reaction to ANY opposing idea or theory; It’s only a matter of degree, not of whether or not the “attack” is real.
Speaking as someone who grew up around fundaloonies, I’ve seen it in all it’s varying splendor; There are those who are virtual cartoons, the kind who scream “WHY DO YOU HATE JESUS ?!” when you prove that they were wrong about what time “Honey Boo-Boo” starts - And, generally speaking, it is probably best for everyone to wall those morons off in a compound somewhere and make sure they can never vote in a general election.
But then there are the ones who seem reasonable and well-balanced, and truly and sincerely believe that they are engaging in an honest, rational discussion of very real scientific matters that address the open-to-debate reality of ghosts, unicorns, alchemical transmutation, talking snakes and immaculate conception. They still tread water in an undercurrent of defensiveness and persecution paranoia, but believe that because they don’t indulge it in a vulgar display of hysterics, then they are not actually still guilty of it. They prefer to manifest it through the tactics of smarm and condescension, to ridicule and dismiss an inarguable fact by impugning the character, the motive or the intelligence of a fair and rational person whom they are conditioned to see through a filter of self-defensiveness and, yes, “I’m-being-oppressed.”
NOBODY can win an argument with someone who is already convinced that they will either go to heaven or be tortured for eternity if they even consider a conflicting idea, AND that they are morally superior for the maintaining of that attitude. When faced with an opponent such as that, the only hope is to demonstrate to the audience the utter asininity of that very position. If you can make that case, then the details of your own theory itself are almost irrelevant; The real victory is in the destruction not of the believer’s theories, but their stance of righteous determined ignorance.