Well, I did the interview just 6 months ago, so I hope so. You don't need to find the best people for a position, you need to find the ones that meet the requi

Well, I did the interview just 6 months ago, so I hope so. You don't need to find the best people for a position, you need to find the ones that meet the requirements that you should have already set. If you're changing those requirements during the interview then you're doing it very, very wrong. It's fine to ask additional questions to get a better understanding of how well someone will fit, but that's completely different than moving the goalposts as the interview progresses. Wait for "the best people" and you could be interviewing for years.