Let's make this birthday one to remember.

82 years old (Born on June 29, 1942)

Happy Birthday, Jon Barwise! Your logical brilliance has always been unmatched—rumor has it even your birthday cake candles follow a strict logical sequence. We still chuckle recalling how you once revised the theory of logic so thoroughly that Aristotle himself would have needed tutoring sessions!

Your groundbreaking contributions continue to inspire mathematicians and philosophers alike. May your special day be filled with joy, laughter, and perhaps fewer paradoxes than usual. Here's hoping this year brings you as much clarity and success as you've brought to logic itself—though we suspect you'll find some delightful contradictions along the way!