this reminds me of a thread some time ago:
http://www.pprune.org/biz-jets-ag-fl...-shutdown.html
I guess the "double check before you change something" is not as old fashioned as the machine-to-human-interface groupies try to postulate on and on and on and on... similar knobs are as bad as knobs that were thrown around a panel in a randomized modern art way but the machine-to-human interface won't EVER be perfect.
Poor FAs (and poor PAX frightened to hell), but happily they all survived... this time...