You'll know it when you see it.

My gosh man the things I tried to do as a young Eng. myself - some of the tedious things I did to avoid copying strings or this or that! It's hard to see how such things add to 'complexity' in a way that slows down the project.

'Keep it Idiomatic' is a great way to keep things moving and as things become problematic, they can be tweaked.

Obviously in some cases that's not going to work.