Let's analyze the problem using Bayes Net terminology. Let A={suspect=Knox's demographic profile}, B={suspect lives with victim} and C={suspect guilty}. Then your claim is that the net is structured as A->B->C, or that the demographic evidence is conditionally independent of guilt given co-habitation.

No.

My claim is that the net is structured as A->C<-B; both A and B affect the likelihood of guilt, and in particular A substantially reduces the likelihood of guilt as James_Miller points out (Note that I'm not saying B is irrelevant, obviously this is wrong).

I agree.

[LINK] Amanda Knox exonerated

by fortyeridania 1 min read28th Mar 201558 comments

9


Here are the New York Times, CNN, and NBC. Here is Wikipedia for background.

The case has made several appearances on LessWrong; examples include: