A job interview typically precedes the hiring decision, and is used to evaluate the candidate. The interview is usually preceded by the evaluation of submitted résumés from interested candidates, then selecting a small number of candidates for interviews. Potential job interview opportunities also include networking events and career fairs. This job interview is considered one of the most useful tools for evaluating potential employees. It also demands significant resources from the employer, yet has been demonstrated to be notoriously unreliable in identifying the optimal person for the job