It sounds first like you are saying that I decide which side of an issue is true by how many people are on each side.
That's what you said: "many fundamentalist ideas about what the Old Testament says are diametrically in opposition to the science that is routinely and successfully used and taught in every major university and industry in the world."
Popularity is a bad way to determine truth.
And then you claim to be in possession of a genuine, fool-proof, guaranteed, good-housekeeping certified, money-back if not satisfied, crystal ball (or equivalent) that is a repository of all truth.
Saying that truth can be possibly be determined is not equivalent to what you say here. This is the kind of stretching of the truth is the only thing you can do to keep your blind faith in common descent. You have never been able to have a rational conversation on the topic of common descent. You're nothing but a ball of emotion.
No, I am not concerned with popularity contests on deciding which side of an issue is correct.
Except you contradict yourself as just demonstrated.
And you will have to understand my hesitation at buying into your claim about your “Cheerios box truth-o-meter”.
Keep stretching the truth. You'll find its entirely malleable within your own mind.
What I didn’t see was a simple, direct answer to my question, so let me try again: What yardstick do you use in determining what is true when there is a disagreement?
Before you can answer that question, one would need to know if it is possible to determine truth (by any metric). Is it possible?
But just so you can exercise your fair play muscles, I'll answer your question so you can answer mine. We determine what is true by what is consistent within itself, what is coherent as a set ideas and/or events that follow one another, and by what has predictive power. Any of these things are weighed against the opposing idea to create a level of confidence in one side or the other.
I'm even going to predict what will happen. You will answer "yes" to my question, and you might even agree on my criteria for determining truth. Then we'll determine you throw all that out and rest your entire argument on consensus.