It really isn't "dark arts" Donalk.....it's just common sense and the ability to either understand a simple pax announcement or ignore it and face the consequences of doing this.
BTW if you actively ignore it don't bother to sue the carrier for injuries you may sustain....
One day we may get to the point of no CC on a plane. You might be expected to purchase your safety card from a vending machine and then actually read it....who knows?? We may not even have Pilots.....we do have the autopilot already and apparently to the uninformed that can land a plane
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I wonder how many SLF would dispense with the real McCoy given the choice. You know the professional training,expertise experience....
In the meantime I still have a job because a lot of people like to have us around.....just like the Pilots!!