That's because most corporations seem to define experience incorrectly. Experience is not simply time. Instead, I prefer Hunt's definition of experience: "By experience, I mean specifically that performing this skill results in a change of thinking. As a counterexample, consider the case of the developer who claims ten years of experience, but in reality it was one year of experience repeated nine times. That doesn’t count as experience."

Unfortunately, the reality is that most companies equate experience with years; just look at the typical job postings as an example of this mentality.