Confident Ruby: Inputs
blog.rkcudjoe.com
blog.rkcudjoe.com
This is not really something ever taught in academia or in hobbyist/bootcamp code classes, where the motto is "just get something done until you get the hang of things", and the projects are so small that fighting cruft doesn't result in a huge time savings.
So for myself, when building large projects, it never occurred to me how vital it was to have consistent interfaces...and not having them in large projects is much more dehabilitating than it is in medium-size-to-small projects...I suppose if you studied OOP and software engineering, the "Confident Ruby" book would seem to contain little more than a review of code smells...but I think his take of "confidence" being a quality of code is what finally lit the bulb in my head.