What does Vincent's character challenge in GATTACA?

Vincent's character in GATTACA serves as a powerful challenge to the notion of genetic determinism. Throughout the film, he strives to transcend the limitations imposed on him by his genetics. Born as a "natural" child in a society that values genetically engineered individuals, Vincent embodies the struggle against the belief that one's genetic makeup determines their abilities, opportunities, and ultimately their worth.

His journey emphasizes the concept that personal ambition, hard work, and determination can defy the expectations set by one's DNA. Vincent’s actions and successes highlight the theme that individuals can carve their destinies, regardless of their genetic background. This reflects a deep critique of a society that assigns value based solely on genetic traits, elevating the idea that individual will and spirit can triumph over predetermined genetic fate.