On a handful of occasions, I've said "yes" to hiring somebody, despite having a nagging doubt about them, because they seemed to have the requisite technical ex

On a handful of occasions, I've said "yes" to hiring somebody, despite having a nagging doubt about them, because they seemed to have the requisite technical experience and interviewed OK, and I didn't feel I could justify saying "no" on the basis of an intuition. In almost every case, they've ended up later either demonstrating some unprofessional behavior, like having an abusive temper, or been revealed to be incompetent in some aspect of the job. And yet, I still wouldn't feel comfortable turning somebody down purely based on a gut feeling. It's made me pretty uncomfortable about participating in hiring process at all.