Students gain insight into the process and purpose of their own learning. First, they challenge and coach each other to learn tactile mazes, analyze what helps and hinders learning, and discuss learning differences. Several activities provide insight into how the community of humans learns what is safe for survival. Students learn about the human nervous system and investigate two real-life mysteries involving nerve damaging chemicals. They simulate historic brain research on the effects of enriched and impoverished environments. Students debate the ethics of human, animal, and in vitro experimentation, and take part in a play to summarize their learning.