Research-Comprehensive understanding of human decision
Diagram express that decision making seemingly is human using the different part of the brain for biological reactions. However looking from a psychological angle it will also be divided into a coherent process, where random/chance is take away part of rationality in the human body.
The process of making this diagram
Original Brain is depicted by technical drawing while logo designed to represent decision making steps.
Then 3d model has constructed delete all the organs except the brain and muscles.