How would you feel if, in the middle of a conversation, you couldn’t come up with the word for water, shirt, or table—or your own name? If suddenly it was a struggle to comment on a movie or tell a simple story? You’d likely feel confused, embarrassed, frustrated, scared. According to the National Aphasia Association, over two million Americans suffer from aphasia—the inability to speak, write...

Esco Obermann embodied interdisciplinarity. That's him in the photo to the right, upside down on his parents' windmill in Yarmouth, Iowa. (Look closely—the soles of his shoes are aligned with the motor.) Esco, one of nine siblings, grew up doing acrobatics on his family's farm in southeastern Iowa—backbends on bulls, rope stunts in haylofts, L-sits on windmills—as if driven to seek new...

Sam Rebelsky is a professional problem-solver. That is, he’s a computer scientist. Whether he’s tackling a programming task or confronting the social and ethical problems of his discipline, he relishes breaking down complex problems, coming up with step-by-step solutions, and teaching others to do the same. A professor of computer science at Grinnell College and a Fall 2018 Obermann Fellow-in...