Kent Beck, the person who gave us Extreme Programming and popularised Test-Driven Development, tweeted something in April 2023 that should have been a wake-up call for every developer alive: 90% of my skills just went to zero dollars. 10% of my skills just went up 1000x. Two years later, in a November 2025 podcast appearance, he expanded on what that 10% actually looks like: “Having a vision, being able to set milestones towards that vision, keeping track of a design to maintain or control the l...