You Don't Know What You Don't Know

You Don't Know What You Don't Know

    Of course you don't know what you don't know, but how important is it to know what you don't know? Personally, I don't know a lot about astrophysics, but that's not really important to me. LOL. My wife and I own a hair salon, so understanding beauty products is essential. Knowing the difference between hi-lites and lo-lites, or how to apply color is a must