Families have never been perfect, says Stephanie Coontz, author and director of research at the Council on Contemporary Families in Chicago. Yet many of us still perpetuate the myths, says Coontz, one of several family scholars scheduled to speak at a free public conference Thursday and Friday at Emory University. In a different place, in a different time --- we believe --- we were closer, kinder, more organized and self-sufficient. Truth, however, tends to be air-brushed with time.