My father is introduced by Toby Berger to Carl Sagan

In the late seventies, my father Paul Shields did research in information theory with Toby Berger at Cornell University, including a semester as a visiting scholar there. In honor of my late father's 89th birthday and of Toby, who died earlier this year, here's a story about them. One morning, my father went to see Toby in his office, and Toby introduced him to one of his Cornell colleagues: "Paul Shields, this is Carl Sagan; Carl Sagan, this is Paul Shields." My father said, "Nice to meet you", and Sagan responded, "Haven't your heard of me?" And my father – in a moment he treasured – said, "No, haven't you heard of me?" (Andrew Shields, #111words, 10 November 2022)