Than that means parents aren't carefully supervising their children.  I've actually seen a woman bring her 4-year-old son to the library and she lets him run around all over the place unsupervised while she's on the computer for hours at a time.  From my perspective this is chronic child neglect and should be stopped.  The librarians are well aware of the little guy running around.  A pedophile would have a hay day snatching this little guy and then mom will be all over APD to find her unsupervised little boy.  Disgusting.