In an expansive interview with Fortune displayed on 15 different "slides," Steve Jobs says this about interviewing potential employees:
How do I feel about this person? What are they like when they're challenged? Why are they here? I ask everybody that: 'Why are you here?' The answers themselves are not what you're looking for. It's the meta-data.
It's the meta-data. I like that. I once mused that asking the question, "Do you have self-confidence?" can be an effective interview question not for the answer that's given (everyone will say yes) but for the meta-data that comes with the candidate's answer: body language, tone, approach, etc.
Jobs also says in the interview that when it comes to choosing strategies, "We do no market research. We don't hire consultants."