Have you ever wondered what the biggest productivity killer for developers is? There are many, but one stands out—and it’s often underestimated.

Every time you send someone a “quick” Slack message, it costs that person 23 minutes of productive work, and that's just the beginning of the problem.

I’ve worked with development teams for over a decade, and we consistently underestimate the disruptive nature of interruptions. This article explores why context-switching is so costly and how to manage it effectively.