I am a believer in an organic breathing changeable Constitution.
So was our founding fathers. They knew that they wouldnt be able to foresee everything and so they placed in the Constitution a method that would allow it to breathe and change. So if it isnt specifically written in text and understood in the original as there, then the Constitution can be amended to allow it to breathe and change. For example, Healthcare. It is not in the Constitution text and needs an amendment to give the federal govt authority over it.