Human Resources - essay

CONDITION:

1. The best possible person a human resource professional can hire is the best person who applies for the job.
2.   If ability and intelligence are normally distributed, more people applying for a job increases the chances of an excellent person in the applicant pool.

Question: How can HR employees increase the amount of qualified and potentially excellent candidates to apply for a job while avoiding having to sift through those less-excellent applications? 

Minimum 200 word requirement, if necessary use in text citations and references.