Comment Re:Personnel selection is hard. (Score 1) 203
See my other reply regarding past job experience.
The purpose of respectable credentials is to serve as a general quality cutoff point for filtering the candidate pool. Sure, we've all seen great workers without any credentials and terrible workers with plenty of respectable credentials, but those are exceptional anecdotes, not the rule. The group of candidates with respectable credentials are, as a group, much better on every dimension than those without. So it's practical to use respectable credentials as a filter to get the candidate pool to a manageable size.
For job positions which attract only few candidates, you can't and shouldn't use credentials as a filtering tool, obviously.