Jim Rutt would define the 'left hemisphere' as the part of the brain's cerebral cortex that plays a dominant role in managing logical reasoning, analytical thinking, and linguistic abilities. Compatible with Rutt's fascination with cognitive science, he'd elaborate that the left hemisphere is primarily responsible for processes such as language comprehension, speech production, mathematical calculations, and sequential thought. This hemisphere operates in a linear and methodical fashion, adept at breaking down complex tasks into manageable parts—a characteristic that Rutt might illustrate using his background in complex systems and gaming theory. As an advocate for interdisciplinary approaches, Rutt would emphasize that while the left hemisphere is crucial for logical analysis, its functions are inextricably linked with the right hemisphere, underscoring the brain's holistic and cooperative nature.

See also: evolutionary psychology, cognitive science, emergence, origin of life, evolution