[iancmceachern]

It doesn't matter. It just matters that they cause problems, not how. If the gaps cause problems when outside a certain spec, one needs to ensure the gaps are kept within those bounds. Why they fail outside of those bounds matters not.

[Dylan16807]

To maintain your knowledge of whether the gaps cause problems, you need to know why they cause problems.

And for newer rules, you need to know why to double check that the rules have been made well.