3LC, Inc. introduces 3LC, a groundbreaking tool revolutionizing machine learning and data science. Its real-time, data-centric iterative workflow enables data scientists to enhance training data quality and tackle complex challenges beyond mere label correction. Central to 3LC is its live data editing feature, allowing users to instantly modify data for optimal model performance. The tool offers unique per-sample, per-epoch metrics and interactive visual diagnostics for insights not found in traditional machine learning, and it's compatible with various networks, models, and data types. 3LC integrates seamlessly into existing training scripts, providing stunning visualizations and detailed insights for immediate data modifications. It ensures data integrity and security, even in air-gapped environments. Representing a paradigm shift, 3LC focuses on data quality, iterative improvement, and interactive editing, leading to more efficient and user-friendly machine learning processes. It transforms machine learning approaches with just three lines of code.