The other half of the Kahneman-Tversky collaborative team, a bold and influential psychologist known for his indifference to others' perceptions and significant contributions to the field.

Wife of Amos Tversky and a notable psychology professor, who experienced cultural adjustments when moving to Israel and had a complex role balancing Amos's work relationship with Danny.

A close friend and early collaborator of Amos Tversky, who eventually chose to pursue his own career path to avoid being overshadowed by Amos's dominating influence.

A doctor from Toronto whose career was significantly influenced by the work of Kahneman and Tversky, collaborating with Amos to study decision-making in medicine.

A Harvard psychiatrist who explored the concept of "fertile pairs" and interviewed Kahneman and Tversky, revealing insights into their partnership dynamics.