Pragmatic Rules--Language Use
Certainly, there is a lot to keep in mind as we combine various words into sentences to express our thoughts. It's a wonder we can do it at all, let alone so effortlessly.
But wait, there is more. The toughest part is yet to come--Pragmatic constraints.
To me, there is a close analogy between language and a gun.
For example, Language Form (phonology, morphology and syntax) is analogous to the gun itself.