This is very true. I think it's also probably true that it gets harder to trust code as you get closer to the coalface, much the same way as when collaborativel

This is very true. I think it's also probably true that it gets harder to trust code as you get closer to the coalface, much the same way as when collaboratively working on a document, one may become frustrated by another person's grammar or style - yet a third party reading the document would not be able to tell the difference. This I suspect also applies to chefs, plumbers, architects, and many other professions.