This is not a "what do we need more" scenerio here. What Luke lined out was in the event of shit hitting the fan, a plumber may come more in handy than a guy that designs things. Sure, when civilization comes back together and large projects are needed, Engineers play a pivotal role. In the realm of income, no, of course a Plumber will not start at a great income. But I know many a plumber that moves from plumbing apprentice to owning their own business and make $100,000 + a year. Their business even more.
My quam was that Engineer's contribute more to Society. I think this statement is elitist and false. If you're an engineer, obviously you'll have some handy-man type skills (dependant on field of engineering). Half the engineers I know are really educated mechanics that love getting their hands dirty and happen to know the math behind the principle.
But to equate a salary to worth to a Society is purely falsehood and again, elitist. I've known people with portfolios and worked for these people that honestly, couldn't hold a hammer. They don't want to. I get that. It's hard work. To claim hard work means that you're less educated, of lesser intelligence or less productive for and to society is ignorant. In my experience there's cases with people where the shoes really couldn't fit on the other feet in terms of chosen fields. Take playing guitar for example... anyone can learn but not everyone can write Stairway to Heaven. While in the same way "anyone" can just "put pipes together" (which for the record is not that simple) or frame a wall, or side a house, or pour a driveway, it is just not that simple.
Anyone can also drive a car. But anyone can get into an accident. The same principle applies. Not everyone is has smart as everyone else and there's nothing wrong with this until the smart person starts to feel above those of lesser intelligence.
I'm not sure what the general debate here is in any case. If it's who contributes more to society? Well, that has nothing to do with what you do but more about who you are. If it's who is more integral in the big scheme of things? This cannot be measured in monetary gain or income. If it's who is smarter? Something can be said for not working hard and being "smart" and getting a degree. Something can also be said for working hard and not being a douche-bag elitist asswipe that has soft hands and treats everyone like they are a lesser form of life.
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