These categories are useful enough to apply not to just engineers, but also to engineering managers. You would perhaps think that part of going into management

These categories are useful enough to apply not to just engineers, but also to engineering managers. You would perhaps think that part of going into management is being more understanding of people and the problems that occur when a "simple" engineering solutions meets human nature. And yet, I've worked with managers drawn from engineers who still operate as if the people working for them are simple machines. All they have to do is read the requirements, give accurate estimates, follow the process, use the tools, and TADA out comes working software that meets user needs.