re: SpaceX says Human Error...
Yeah, but those are all human failings.
Sabotage is a failure only by personal perspective; negligence is worse than ignorance: we *know* better.
Acts of God? My personal belief is that that's how we rationalize our ignorance (and I say that knowing with out a doubt there's a jinxed machine in the basement at work...)
My original thought behind the thread was to point blame away from an individual and more toward the human condition: We're born specious.
Recognizing that is key; especially when *any* mistake can compound into catastrophic consequences.