The mathematical conclusion was if you took any 25yr period in the window of study, it was always more cost affective overall for the mortgagor to go with a variable rate mortgage versus a fixed rate.

@Kurt Granroth that’s a great summation, but before you jump to a conclusion, you may have missed a subtle detail that completely changes the deal and renders your characterization of one of your above examples as incorrect.In the first PPM example that you gave, where your conclusion was that the class A investors and class B investors would equally lose, notice that the words “Preferred Unitholder” are capitalized.  

I've started to come to that conclusion that hey these "up and coming" neighborhoods are going to overflow some day so might as well the one next door but nice to read that from someone else too.

If you dispute the conclusion you're not disagreeing with me, you're disagreeing with math.  

Essentially at the conclusion of the report, the amount (and most likely 100% is) of subsurface petroleum leaked from the tanks is delineated and general ground run offs are calculated.

The reason they came to that conclusion was because I took more than ten minutes doing their inspection and on my back on a their concrete with my head inside there furnace looking for hair crack which will cause carbon monoxide.

I was coming up with a similar conclusion and am glad to see it validated here.

So in conclusion...Dogs rule.   

Jason,That is the conclusion I've gotten too from the other posts as well. 

Glad to see your reply, that is also the conclusion I came up With.