Paul Jay and Gerald Graff defend the market value of much-maligned disciplines:

It is true that humanities study, unlike technical training in, say, carpentry or bookkeeping, prepares students not for any specific occupation, but for an unpredictable variety of occupations. But as many before us have rightly pointed out, in an unpredictable marketplace this kind of versatility is actually an advantage.

As Associate Dean [Scott] Sprenger notes, "the usefulness of the humanities" paradoxically "derives precisely from their detachment from any immediate or particular utility. Experts tell us that the industry-specific knowledge of a typical vocational education is exhausted within a few years," if not "by the time students enter the workforce." It is no accident, he observes, "that a large percentage of people running Fortune 500 companies (one study says up to 40 percent) are liberal arts graduates; they advance more rapidly into mid- and senior-level management positions, and their earning power tends to rise more significantly than people with only technical training."

Catherine Rampell flags the above chart from a new study (pdf) and makes the case for a range of college degrees.