Verdict

Adam is right

Silence is the golden rule of cinema.

The dispute

Is talking during a film at the cinema ever acceptable?

Adam v Katie

This dispute concerns the social convention of shared public spaces, where the standard expectation is to minimize disruption for all paying patrons. While Katie's desire for brief clarification is understandable, the subjective threshold for 'quiet' varies so wildly that Adam’s absolute prohibition serves as the only enforceable contract for a collective experience. The cinema is a temple of observation, not a forum for whispered discourse.

Miss Katie is welcome to provide her live commentary at home, where her audience cannot demand a refund.