WUFI

Yes, I suppose that makes sense. (I believe the scenario with only 1/2" of foam did show a slight, but not significant, reduction in moisture levels.)

So as a followup question, to what extent can these results be applied to real-world conditions? Are these results a generally useful guideline for ...

I am having trouble interpretting results from a number of comparative scenarios. All the wall assemblies begin with 12 inches of "old brick" and then add various insulation and vapor barrier materials to the interior side of the wall as follows:

1. Solid, 12-inch, “old brick” wall
2. Same as 1 ...