One of the smartest things you can do is to admit when you don’t know something. The most intelligent people are not those who purport to know it all. The most intelligent people are those who have a realistic awareness of what they know and, just as importantly, what they don’t know.
Some people foolishly pretend to know things when in fact they don’t. It sometimes serves their pride, yet in the end such behavior is completely self defeating.
Admitting you don’t know something is the first step in learning it. No one can possibly know everything. There is no shame in not knowing.
There is so much you can learn when you admit to yourself and others that you don’t know. It is far better to admit you don’t know, than to proceed with missing or incomplete knowledge. Have the courage to say “I don’t know” and then make the commitment to find out.