The general public does not understand what engineers do. That's true of most professions, except surgeons and trial lawyers, because they make TV shows about them. It's just a fact of life that we have to deal with.
We could chip in and launch a campaign to educate the public about engineers, but to what end? So you don't have to spend that extra minute at a party explaining what you do?
Your employer knows what you do, and pays you accordingly. There isn't any tangible benefit from publicizing the engineering profession.
Mr. Schweber rightly points out about the lack of stardom status for engineers as compared to artists / celebreties.
Societies now reward innovation more than routinely well defined orderly steps. Engineering work, most of times falls under this later category => a sequential improvement over the previous state.
Moore's Law is one example: Its been held for so long consistently that its effects are taken for granted. So e.g. a faster / 8-core processor could be a significant endeavour for the engineering community but for masses, it was supposed to happen anyways.
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