“I remember going into Professor Habicht’s office—he always had time no matter how busy he was—and saying ‘How would you like it if IG II2 2971 dates to around 250 instead of 314?’ . . . I did not expect to hear anything for a day or two, as I had interrupted him in the midst of his work. Was I ever mistaken! About one half hour later I opened my door to his knock…”