Second system syndrome

• https://wiki.c2.com/?SecondSystemEffect
• organising code the 'right way' and not the practical way - if the next developer needs something to be in a certain place they have the resourcefulness to consider it already exists and find it before duplicating any effort, the power to move it themselves, and also they won't have to guess where to put it. unit and integration tests that were written with behaviour enforcement in mind will flag any issues and can be tweaked as needed