Comment by nevon

Have you never had a coworker that needs so much help that they end up "costing" so much of other people's time and focus that you would have been better off if they weren't there at all? While I thankfully haven't encountered a lot of people that far out on the competency spectrum, I have met a few, or more than a few that are not too far off. Not a large proportion of hires, as OP said, but still.