The issue is where developers spend mostnof their time. Almost by definition, we don't spend time dealing with scenerio #1, because things just work and we are

The issue is where developers spend mostnof their time. Almost by definition, we don't spend time dealing with scenerio #1, because things just work and we are done. Where we spend our time is when things don't work. If it doesn't work, but everything fits our mental model, solving the problem is generally straight forward. We may need to see how everything fits together. We may need to add some logic to put things together correctly, but it is gennerally just a straight forward part of the job. When things don't work, and don't fit your mental model, the work becomes an exersise in frustration. Do that enough times and you start to develop callasus to avoid the frustration.