What is meant by zigzagging in Miss Evers' Boys?

In "Miss Evers' Boys," zigzagging refers to the unethical and deceptive practice of the Tuskegee Syphilis Study, where researchers misled African American men about their treatment for syphilis. The term metaphorically illustrates the researchers' manipulation and the twists and turns of their justification for withholding proper medical care. This betrayal of trust highlights the moral complexities and the devastating consequences of exploiting vulnerable populations in medical research.