Ah, yes that clarifies a problem I've had trouble with too. I work with a complicated framework, and I often end up having to explain why a seemingly simple cha

Ah, yes that clarifies a problem I've had trouble with too. I work with a complicated framework, and I often end up having to explain why a seemingly simple change to x is actually complicated, even if I'm looking at the code for doing x right now and could trivially make the change. x is at the bottom of a framework, the top of which I didn't code or fully understand, so I'm not sure exactly who's calling this code under what conditions - I have to read and analyse an edifice of code to make sure the change is safe. Or just do the change and hope the integrated tests catch any breakage.