Explore the challenges and behaviors of data scientists using literate programming tools in this 21-minute conference talk from the ACM CHI Conference on Human Factors in Computing Systems. Dive into research findings from interviews with 21 data scientists and a survey of 45 professionals, uncovering insights on coding practices, version control, and narrative creation in notebook environments. Learn about the difficulties in maintaining detailed experimentation histories and how data scientists curate their notebooks into narratives. Gain valuable design guidance for future literate programming tools, including suggestions for history search functionality based on contextual details. Understand the importance of balancing readability with comprehensive version tracking in data science workflows.