In James Patterson's "The Angel Experiment," the concept of stress is humorously illustrated with a picture of a mutant girl trapped in a crate, contemplating her future. This vivid image symbolizes the intense emotional and physical pressure faced by characters in the story, highlighting their struggles and uncertainties.

"In the dictionary, next to the word stress, there is a picture of a midsize mutant stuck inside a dog crate, wondering if her destiny is to be killed or to save the world." This quote underscores the tension and dilemma experienced by the characters as they navigate dangerous circumstances, balancing fear and hope in their quest. Patterson blends dark humor with serious themes, making the story compelling and thought-provoking.