Continuing the theme of teenagers and birds, and adolescent birds, Lucy's relationship with the telephone has taken a step. Now she says "hello" after we have punched a number in.
Since she has "What you doing?" down pat, she only has to learn "Nothing, what you doing?" to be able to communicate just as Lyman's boys did at a comparable developmental level.
Next comes "You want to do something later?" followed by "I don't know. Do you?"