Comment by skydhash

> You can look at the kind of work they're doing, how effective their solutions are, and how long it takes them to do it. That's the basics of it across a wide range of professions. Now, there's no one-size-fits-all metric or formula you can just calculate based on objective facts for most of this, because the work is more varied than e.g. factory work, but it's also not impossible to make the comparison, if you actually understand the work reasonably and you use judgement.

AKA, be subjective! Which people are wary of, because what it brings is politics and tribalism.