The Lydia McGrew Podcast

Independence and the case of Mr. Jones

33 min · 8 jun 2026
aflevering Independence and the case of Mr. Jones artwork

Beschrijving

Today I'm taking a hypothetical police case in which a mother and daughter testify. Since they live together and haven't been kept separate before they testify, it seems like their testimony can't possibly be regarded as independent, right? And that lessens the force of their two testimonies for what they agree on, right? I mean, c'mon. They've got to be influencing one another.Here I illustrate the fact that independence is not a flat, simple thing. Dependence in the form of an undesigned coincidence can even be *good* for the confirmation of some H, because H unifies the testimonies better than ~H. The details can show us that the witnesses don't seem to be even unconsciously influencing each other's memories. All of that can be understood in terms of the mysterious case of Mr. Jones.If you want to get into more geeky details, here's a paper of mine on the value of varied evidence:https://quod.lib.umich.edu/e/ergo/12405314.0003.010?view=text;rgn=main

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aflevering Independence and the case of Mr. Jones artwork

Independence and the case of Mr. Jones

Today I'm taking a hypothetical police case in which a mother and daughter testify. Since they live together and haven't been kept separate before they testify, it seems like their testimony can't possibly be regarded as independent, right? And that lessens the force of their two testimonies for what they agree on, right? I mean, c'mon. They've got to be influencing one another.Here I illustrate the fact that independence is not a flat, simple thing. Dependence in the form of an undesigned coincidence can even be *good* for the confirmation of some H, because H unifies the testimonies better than ~H. The details can show us that the witnesses don't seem to be even unconsciously influencing each other's memories. All of that can be understood in terms of the mysterious case of Mr. Jones.If you want to get into more geeky details, here's a paper of mine on the value of varied evidence:https://quod.lib.umich.edu/e/ergo/12405314.0003.010?view=text;rgn=main

8 jun 202633 min
aflevering What model of the Gospels is confirmed by undesigned coincidences? artwork

What model of the Gospels is confirmed by undesigned coincidences?

Anybody who is trying to study the Gospels honestly is trying to get a good model of what they are like. Those who think that the Gospel authors were writing in a genre in which they were licensed to change and fabricate even details are making non-deductive arguments for their own model. (And it's disturbingly misleading to say that these claims are restricted to just details, but that's not what I'm addressing in this video, except in passing.)So when I argued in The Mirror or the Mask that finding undesigned coincidences is in tension with the view that the authors considered themselves licensed to change facts, I was making a *probabilistic* point about model comparison and explanatory inference. This seems like a good time to review that point.Interested in more? Go here to buy The Mirror or the Mask:https://www.amazon.com/Mirror-Mask-Liberating-Gospels-Literary/dp/1947929070/ref=sr_1_1?dchild=1&keywords=mirror+or+the+mask&qid=1600272214&sr=8-1

8 jun 202625 min