The taxonomy of jobs that most people have in their minds is extremely simple (doctor, lawyer, teacher, builder, engineer, window cleaner, garbage collector, astronaut, ...) and is mostly based on a grade-school understanding of what kind of jobs people do.
But the reality is that there are millions of types of jobs, with incredible variety and specialisms, and the real content of a job is rarely captured in a job title.
But the reality is that there are millions of types of jobs, with incredible variety and specialisms, and the real content of a job is rarely captured in a job title.