Another factor could be that it’s not easy for schools to evaluate job applicants on merit alone, because merit can be difficult to define or measure. In the te

Another factor could be that it’s not easy for schools to evaluate job applicants on merit alone, because merit can be difficult to define or measure. In the tenure system, a professor might work at the same institution for 40 years. But when hiring for tenure-track positions, schools often have to guess about lifelong productivity based on just a few years of experience. Hiring faculty is therefore a high-stakes decision; while you can always deny someone tenure, doing so means you’ve wasted years nurturing talent that you don’t want to keep. With so much uncertainty involved in the process, it may be natural to go with what seems like a safe choice: an applicant trained at a high-prestige school, even at the expense of exciting candidates from slightly less elite institutions. Brilliant, and applicable clearly to other areas