There are TONS of jobs that are dont require you to do be able to "do" before you can "assess". Software Assurance, for example. You don't have to program a day in your life to know what appeals to a customer (GUI / Error Messsages, etc). It requires no knowledge of the underlying code, but only an eye for quality.
Likewise, someone who is a studies marketing or even pyschology might be better versed to "critique" whether a car is good. Not whether it's got the horsepower or the torque, but whether people will like it. And they don't have to know anything about the car itself - only if people will like it.
In the same way, an art critic doesn't have to know anything about how the art was made, or even be able to make the art - as long as they're good at deciding what people will like and what they will not like.
The list goes on..
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"I'm typing on a computer of science, which is being sent by science wires to a little science server where you can access it. I'm not typing on a computer of philosophy or religion or whatever other thing you think can be used to understand the universe because they're a poor substitute in the role of understanding the universe which exists independent from ourselves." - Willravel
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