SpiritualityScience

Why Humans Need Fiction, According to Neuroscience

Big Think
Big Think•May 14, 2026

Why It Matters

Understanding the brain’s narrative drive explains why fiction captivates audiences, guiding creators and marketers to craft stories that align with innate cognitive processes, ultimately boosting engagement and brand loyalty.

Key Takeaways

  • •Left‑brain interpreter creates narratives to explain actions post‑hoc
  • •Split‑brain studies show non‑speaking hemisphere influences choices unconsciously
  • •Conscious experience is a constructed, non‑linear story, not real-time flow
  • •Fiction satisfies the brain’s need for coherent narratives and scenario rehearsal
  • •Personal experiences shape each individual’s interpreter, leading to unique storylines

Summary

The video explores neuroscience behind humanity’s craving for fiction, focusing on the left‑hemisphere “interpreter” that weaves our experiences into coherent stories. It argues that consciousness is not a seamless, linear stream but a post‑hoc narrative constructed by unconscious processes.

Key insights stem from split‑brain research, notably Michael Gazzaniga’s work with patients whose hemispheres were isolated. The non‑speaking right hemisphere can direct actions, while the left‑brain interpreter fabricates plausible explanations—exemplified by a patient choosing a bell over music despite ambiguous cues. This reveals that our sense of agency and meaning is continuously retrofitted.

A striking example is “Joe,” who, when presented with simultaneous auditory stimuli, points to a bell. The left brain then concocts a story linking the choice to prior experiences, illustrating how the brain fills gaps with narrative. The narrator emphasizes that humans are “storytelling animals,” constantly seeking coherence even when underlying processes lie outside awareness.

The implication is that fiction satisfies a deep cognitive need: rehearsing scenarios, testing social dynamics, and reinforcing the brain’s narrative engine. For businesses, this explains why storytelling drives engagement in media, advertising, and brand building, and why immersive content can shape consumer perception more powerfully than raw data.

Original Description

We created this video in partnership with Unlikely Collaborators.
What if the voice in your head is less of a witness and more of an interpreter? Two neuroscientists discuss the brain’s drive to explain, narrate, and make everything add up.
e7m6bpj7E-y
Stories do not just entertain us; they may be one of the main ways our brains rehearse experience, assign meaning, and turn scattered moments into something that feels like a self. We are constantly sorting actions, memories and emotion into a version of events that feels coherent enough to live inside. Neuroscientists Michael Gazzaniga, PhD and Dean Buonomano, PhD draw on split-brain research to explain the left hemisphere’s “Interpreter”: the brain’s tendency to create explanations for behavior, even when it does not have the full picture.The instinct to create narratives likely shapes far more than self-understanding. It may underpin identity, belief, and the desire to belong in the world.
----------------------------------------------------------------------------------
Go Deeper with Big Think:
►Become a Big Think Member
Get exclusive access to full interviews, early access to new releases, Big Think merch and more. https://members.bigthink.com/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description
►Get Big Think+ for Business
Guide, inspire and accelerate leaders at all levels of your company with the biggest minds in business. https://bigthink.com/plus/great-leaders-think-big/?utm_source=youtube&utm_medium=video&utm_campaign=youtube_description

Comments

Want to join the conversation?

Loading comments...