This paper argues for teleology—the idea of design or purpose in nature—by examining the complex process of cell differentiation in vascular plants. The author contends that the intricate mechanisms by which simple cambium cells differentiate into specialized xylem and phloem tissues, influenced by both internal (hormonal) and external (environmental) factors, are too complex to be adequately explained by evolutionary processes alone. Supporting this claim, the paper cites experiments demonstrating the multifaceted influences on this process, and concludes that the consistent, unchanged nature of this process throughout geological time, as evidenced by fossil records, further strengthens the teleological argument. The paper ultimately suggests that the observed complexity and consistency of the process points towards intelligent design, rather than random chance.