There’s a vast difference between, say, preparing for a school exam and preparing for a job interview. In the former, you know in advance what material will be

There’s a vast difference between, say, preparing for a school exam and preparing for a job interview. In the former, you know in advance what material will be tested. Job interviews are more like PhD comprehensive exams, or professional licensing exams. I know a lot of working professionals who are good at their jobs, yet admit they wouldn’t be able to pass the license exam today.