Laws of requirements evolution

1. One will be more

If your product owner, BA or domain expert tells you that you only need one of a thing (eg. currency, user type, transaction type etc), you can be sure that sooner or later you'll need more of that thing.

Laws of requirements evolution

2. Constants will become variables

If your PO, BA, or domain expert tells you that a quantity is constant (e.g. conversion coefficient), you should expect that it will turn into a variable sooner or later

Laws of requirements evolution

3. Linear will turn into non-linear

If your PO, BA, or domain expert tells you that a computation is linear, you should expect that it will turn into a complex equation sooner or later.

I believe these laws are fundamental because of the way our understanding of the world evolves - not because "the business people keep changing their minds".

Look at how mechanics equations change from Newton - relativity - general relativity - quantum for the pattern.