Suppose an old acquaintance stops by unexpectedly at your home during breakfast. You offer to take the day off, but he insists that you keep your regular schedule. So you invite him to go with you to work, and he accepts. How would he feel if you then ignored him completely—didn't converse with him, failed to acknowledge his presence at coffeebreaks and lunch, and neglected to introduce him to anyone? We would all agree—that's no way to treat a friend!