Heinlein, we've noted, has roughly four main characters (for anyone who
might have missed it, they are: The crusty old man, who is Heinlein; the
competent young man, who is a young Heinlein; the matronly middle-aged but
still simmeringly sexy woman, who is Heinlein with tits; and the nubile
competent young woman, who is young Heinlein with tits....
