[yummyfajitas]

Aggregate false positive/false negative rates don't prove anything. They can be caused by composition differences, which the analysis demonstrates the existence of.

But I'm sure they look convincing to ProPublica's readers who are not statistically sophisticated.

[danso]

What's even more concerning is that these statistical noobs sometimes look to experts, unaware that these math geniuses may lack the literacy to read a plaintext notebook to the end.