Most definitely a good read...
The Moutainproject thread linked above is very similar to accident discussions we have here on VFTT. Analysis, conjecture, search for understanding and occasional criticisms of victims and fellow posters.
One prescient poster offered the following really good observation, however:
Most trad climbing anchors and protection pieces are never tested because the leader seldom falls. Are they good? No one really knows. EVERY rappel anchor is fully tested multiple times by descending climbers. Are these anchors good? Sometime not.
Having placed my share of marginal pieces over the years, and not falling on them, I get that comment. Yet in retrospect I always felt most vulnerable rapping.