For starters, there's not much wrong with saying, "I don't know." "I always recommend being honest when you don't know ...

We get it: admitting that you don’t know something can make you feel super vulnerable. That’s why so many of us don’t say “I don’t know” even if we have no idea what the answer is to a ...

So when faced with a tough question, you should always admit it if you don't know the answer, right? Wrong. As it turns out, saying "I don't know" can seriously hurt your credibility and make you ...