Conversation so far:
When did the film begin development?
CANNOTANSWER.
Why did they decide to do a film about this?
to understand "how someone could be inspired to kill anyone as a result of being exposed to this kind of beautiful art.
Who said that?
Schaefer.

Question: What else did Schaefer say?
Self-contained rewrite: What else did Schaefer say aside from Chapter 27 was made for understanding?