Programmers can learn a habit how to work both fast and with quality by adapting good software engineering practices like writing tests and recognizing sweet spots for more generic software. (The 10x is about that by the way).

For example, if a developer is repeatedly asked to produce solutions for 2+3, 4+7, 10+1, 1001+23, in many cases it's possible to create X + Y and use it. And of course truly X+ Y, not a function with many ifs and boolean flags.