However, my advice would be to look at the statistics from Mess'rs Boeing and Airbus regarding FD failures in the last 20 years (almost zero) and compare that with the number of incorrectly calculated performance data, engine failures/flame-outs, incorrect configurations, loss of spatial awareness, lack of ability in adverse weather and all the other elements that cause the majority of accidents and practice accordingly.
Maybe that's because the black boxes get all the practice.
Seriously, this is just an extension of the thread last week. Search Davis.
The Da Vinci machine does a lot of the 'Handling' in surgery these days. In Canada, a brain surgeon abandoned the machine he was using to go manual. That piece of kit cost 5 times that of the Da Vinci. Basic skills are what you are paid to carry onto that aircraft. Abandon those, and you will watch black boxes take off without you within 20 years.