Many other responses are absolutely true, but here's something else to consider: Over the last 12-14 years, I've never, ever had a "job" that had specific, cle

Many other responses are absolutely true, but here's something else to consider: Over the last 12-14 years, I've never, ever had a "job" that had specific, clear requirements and duties. In the field we're in staff are not line-replaceable units. Each employee is like a box of chocolates, and you'll never know what's inside until you bite (hire them). Some staff will quickly exceed the expected duties and take on high levels of responsibilities and massively contribute to the organization far in excess in what anyone could have foreseen initially. Others will only do strictly what is asked of them (or less) and do the barest minimal to just get by, and basically be a disappointment. Some staff will be able to kind-of fill the job, but not entirely, and will need some training to get there. Others will hit the ground running. This is often why there is a large and ambiguous range for job posts. Basic IT jobs that do have specific, clear duties (and extremely limited growth potential) can have much more clear, lower, and narrow salary ranges.