In the midst of the file we find the following plaintive exclamations:
Something is very poorly. It's my programming skills, isn't it.
So, once again I don't understand statistics. Quel surprise, given that
I haven't had any training in stats in my entire life, unless you count
and.. yup, my awful programming strikes again.
So, good news - but only in the sense that I've found the error.
Bad news in that it's a further confirmation that my abilities are
short of what's required here.