Where I come from, you don't need a license (or any kind of study) to become a plumber.
That means the market is loaded with incompetent people who just don't mind grabbing a wrench and learning about the field in the process. And if they fuck up, they fuck up.
That means, finding a good plumber is a nightmare. A vast majority of them either do a mediocre job by accident, or they may actually try to scam you.
That means the market is loaded with incompetent people who just don't mind grabbing a framework and learning about programming in the process. And if they fuck up, they fuck up.
That means, finding a good developer is a nightmare. A vast majority of them do a mediocre job by accidentally, or they may actually try to scam you.
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In the US at least, plumbers need to be licensed after a probationary period where they learn the craft from other plumbers. They don't make much money initially, and it can take a few years before they become journeymen.