How did the coffee machine know before / when Jim pressed the button, that he was not a Gold Class passenger ? Some kind of scan probably.
That means it knows he is only allowed the black coffee, so there is no need to show him what the other icons mean.
I agree it might have been better to grey them out and only show his option. Perhaps it is deliberately done that way, for the benefit of the Gold Class passengers, so they can gloat over what the "cattle class" customers can't have. Maybe it was another part of the cascading failure.
The principle of exclusivity, means that some people must be excluded.
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