Until the Regulators and airlines stop treating cabin crew as "trolley dollies" and as a way of generating ancillary revenue then this sort of event will continue to happen. The primary purpose of the cc is to ensure the safety of the passengers. That requires more than firehosing them with information within the absolute minimum of time and setting high standards for practical and theory exams. Its not going to happen because it costs too much. The main reason the SFA called an evacuation was pure fight or flight and she chose flight. The best way to suppress this response is through effective training and careful selection of personnel. To allocate the SFA role based on who is senior on the day is crazy.