What are the differences between System 1 and System 2 thinking in stressful situations?

System 1 thinking is fast, automatic, and often emotional, while System 2 thinking is slower, more deliberate, and logical. The host illustrates that in a crisis, individuals typically rely on System 1, which is trained through experience. This means that one's ability to respond effectively under pressure depends on how well they have trained their instincts and reactions.