Summary:
- The article critiques the persistent and scientifically reductive use of the "lizard brain" (or triune brain) metaphor in popular neuroscience and psychology.
- It explains that modern neurobiology has largely debunked the idea that humans possess a distinct, primitive reptilian brain layered over by newer structures, emphasizing instead the integrated and evolved nature of the brain.
- The author highlights how this outdated model is often misused to simplify complex human behaviors and decision-making processes in technology and self-help literature.