Anybody who has been on the job hunt knows how much work you have to put into it. You have to tailor your resume to each specific company, write cover letters and personal statements, and do it quickly so you're one of the first names they see on their big pile of resumes. You do all of that just in the hope that you might be able to interview for said position. Once you get the interview, then it's time to really put the pedal to the medal and learn about the company. You need to prepare answers for the classic interview questions, come up with questions you're going to ask when the hiring manager says, "do you have any questions for me," and you need to research so you know the company's silly little mission statement. Even if the interview doesn't go perfectly, you at least learn from going through the process. One hopeful applicant spent hours preparing for a job interview just to have the rug pulled out from under her, and you need to read it to believe it.