I down-voted this comment because I found it to be condescending. I don't know anyone who works as a flight attendant nor have any relationship to the airline industry that I know of.
What you said is simply mean-spirited. Not everyone is an engineer. Not everyone understands technology. Not everyone needs to. How much they earn and how skilled they are at technology is no measure of a person. That's really offensive.
I know many people who are virtually poor and uneducated who are better human beings --by far-- than some PhD's I've come across in my life. Why must some in technology behave as though these people are beneath them? This is shameful. What a horrible thing to say.