Once technique is taught and a pilot proficient. Raw data skills in an aircraft such as Airbus are not that perishable. I don't understand why many airlines have moved away from maintaining this elemental proficiency.
And on keeping with Airbus. An aeroplane plagued by mode confusion and CFIT, we have yet another OEB, in a string of many, addressing potential failure of the flight directors in delivering correct information.
Raw data proficiency provides the ability to see through erroneous automatics which seem to be a key factor in many accidents and incidents.