The articles suggests asking candidates to consult for you for a few days or a week. That's just not very realistic. I'm all in favor of doing real work with a candidate instead of bullshit whiteboard problems, but candidates who already have a job do not have time to do your consulting job alongside their current job (and their job search!).
Candidates who do not currently have a job perhaps have more time, but still probably are not that interested in suspending their job search to consult with you, and also (correctly) judge this to mean that you're skeptical about their abilities, and want to take a job with an employer who is more enthusiastic about them. That may be somewhat irrational of the candidate, but it's also true.
Candidates who do not currently have a job perhaps have more time, but still probably are not that interested in suspending their job search to consult with you, and also (correctly) judge this to mean that you're skeptical about their abilities, and want to take a job with an employer who is more enthusiastic about them. That may be somewhat irrational of the candidate, but it's also true.