The text discusses the importance of data visualization in the process of building and validating machine learning models, specifically within the context of developing a malware scoring model called MalwareScoreTM at Endgame. Phil Roth created an internal tool named Bit Inspector to facilitate model validation through visualizations, which proved essential in bridging communication between data scientists, engineers, and managers. Initially intended for developers, Bit Inspector's audience expanded to include subject matter experts and executives, necessitating a focus on explainability to cater to diverse users. The text highlights the evolving role of data visualization in enhancing understanding and trust in machine learning processes and underscores its growing acceptance within the information security industry, as evidenced by events like BSidesLV.