The link below goes to a fb thread. You might have to join the group to read it. It's about an incident in a high end class. The thread is about who's fault the incident was and it's great reading. Things to note:
Even tho everyone is looking at exactly the same information, there's lots of disagreement re. who's to blame.
Most folks justify their opinions, so you can follow the reasoning of the opinions that you disagree with.
There's a wide range of experience in the thread, but there's plenty of examples of apparently experienced folks disagreeing with other experienced folks.
Be sure to expand the subthreads so you can really see how the arguments evolve.