Boeing Says Sensor Warning Wasn’t Working on All Planes

Boeing's CEO Dennis Muilenburg addressed the media for the first time regarding the 737 Max crashes, discussing the sensor alert issue and defending the software system. He emphasized multiple factors in the crashes, not solely the sensor malfunction. The market showed slight satisfaction, but victims' families were dissatisfied with Boeing's explanation.

What factors did Muilenburg suggest contributed to the crashes?

What concerns did the victims' families express regarding Boeing's explanations?