What is the human operating system?

Jim O'Shaughnessy refers to the term "Human Operating System" (Human OS) as a metaphor to describe the universal cognitive framework through which all human beings operate. He uses this concept to emphasize that everyone shares the same foundational programming, which affects behaviors, reactions, and decisions, regardless of individual differences.

He discusses that despite differences, all humans are susceptible to the same types of errors and biases, likening it to running the same "operating system". This concept helps in explaining why people often react similarly in various situations and why it is challenging to change inherent behaviors even when aware of them. He also highlights a sense of unity and understanding by indicating that everyone, including himself, is running this Human OS, which makes it easier for people to relate to each other and not feel isolated in their experiences. This approach is used by O'Shaughnessy in his dialogs to foster a more relatable conversation, reducing defensiveness and enhancing receptiveness when discussing personal and sometimes contentious topics 1.