[isleyaardvark]

I love the principle but do we want to save the principle or save the acronym? At this point IMO it's a lost cause. I wish someone with a following would make a retronym of TIE or SYNC to express it.

I remember when The Pragmatic Program 20th Anniversary came out, the authors, in interviews and the new edition itself, described DRY as "the most misunderstood" concept in the book. If for 20 years that is the most misunderstood concept, then maybe the name is not the best.

[xahrepap]

I propose the following: DRBL - Don't Repeat Business Logic

It's funny, because "dribble" or "drool" is the opposite of being dry ;)

Although it doesn't have as fun of a pronunciation in English, DRBR is probably a better acronym? Don't Repeat Business Requirements

[dragonwriter]

Well, DART (Don’t Assert Redundant Truths) might be a better name for the same principal, though its perhaps somewhat opaque when doing imperative rather than declarative (e.g., functional/logic/relational) programming, since people are less likely to consider the former to constitute “asserting truths” in the first place. But it does get more to the point that thing you want to avoid isn’t code that looks similar, or even which mechanically does the same thing, but code that represents the same facts.

[hinkley]

I have a set that’s harder to corrupt, but still not bulletproof:

Source of truth, system of record.

Business decisions should have a source of truth. But the domain of things we want to duplicate or not duplicate is bigger than just the business rules.

If you are asking two questions, it’s okay to have two implementations. If you ask the same question twice, you should get the same answer, not just the same output.

But miscreants can twist the meaning of five different parts of what I just said. Like what even is a business rule? It’s whatever the last thing they said before you got them to stop talking. But if they come back later and want something that disagrees with what they already asked, they’ll wriggle like a fish on a river bank trying to gyrate a way to interpret what they asked for to say you’re wrong (and therefore you should work nights and weekends and we don’t owe you a raise).