A short breakdown of the first 11 minutes
1 minute in:
Girl in school cafeteria brutally faints.
Another girl yells "Do you know this girl?", like that was the most crucial and important thing in this situation.
7 minutes in:
We see event
9 minutes in:
We see flashback to previously said event, in case audience just forgot it
11 minutes in:
After 6 years of being in a camp, a guard has his doubts for quite a while if one of the inmates belong there, despite we just established three minutes prior, that a test could be done in mere seconds to determine that.
So why wait that long?
This movie treats it's audience like dumb movie goers.