I graduated from high school twenty years ago. Looking back at my senior year scrapbook, I found some funny notes my friends left on the autograph pages, from the time I didn't have a telephone. These days, many kids, even the less privileged ones, have mobile phones. For a while there, I didn't have a house phone. And my friends knew it. They were an understanding bunch and my buddies with cars often showed up at my house to invite me out, the old-fashioned way, by knocking on the door. My mom didn't always let me out, but I was always glad my friends came by anyway.