On the wall in the reception area of an optometrist's office I visited 20 years ago, I saw a poster that read, "Teenagers! Tired of being harassed by your stupid parents? Act Now! Move out. Get a job. Pay your own bills. DO IT WHILE YOU STILL KNOW EVERYTHING." Despite 10 more years of life and a graduate counseling degree, I thought about how much less I felt I knew than when I was that foolish teenager. An eye exam would add proof.