Can you explain why it's important to learn about cancer in general in response to this : "The techniques of molecular biology have enabled researchers to uncover the normal mechanisms of cellular proliferation, growth, and differentiation enabling exquisite insight into the abnormal processes that occur during cellular transformation and progression to the cancerous phenotype. Despite the complexity of cancer, research has resulted in steady but incremental advances in prevention and therapy. We will explore the challenges associated with understanding the cellular and molecular changes leading to tumor formation and the promise of new scientific techniques to unravel the mysteries of this disease"