But the main reason for academics to be concerned about the time it takes to get a degree has to do with the barrier this represents to admission to the profession. The obstacles to entering the academic profession are now so well known that the students who brave them are already self-sorted before they apply to graduate school. A college student who has some interest in further education, but who is unsure whether she wants a career as a professor, is not going to risk investing eight or more years finding out. The result is a narrowing of the intellectual range and diversity of those entering the field, and a widening of the philosophical and attitudinal gap that separates academic from non-academic intellectuals. Students who go to graduate school already talk the talk, and they learn to walk the walk as well. There is less ferment from the bottom than is healthy in a field of intellectual inquiry. Liberalism needs conservatism, and orthodoxy needs heterodoxy, if only in order to keep on its toes.
If every graduate student were required to publish a single peer-reviewed article instead of writing a thesis, the net result would probably be a plus for scholarship.