I don't think it's that interviews don't try to evaluate competency, but that the process has become relatively homogenized and it has allowed new incentives to

I don't think it's that interviews don't try to evaluate competency, but that the process has become relatively homogenized and it has allowed new incentives to come into play that target interview taking development rather than skill development. It may also be that companies use most of the interview process primarily as a weeding out of candidates, and then when you get to the final X number of candidates, it becomes a toss up essentially.