Forgot the link.....
http://progressingamerica.blogspot.com/2014/01/an-amendable-constitution-is-opposite.html
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This isn't true.
If you look at the old Medea-Persian laws they were unamendable/unrepealable, which came to be a "plot point" in the book of Daniel, where he was put in the lion's den because he prayed (which was a trap wrought by his enemies) even though the King wished it wasn't so (and couldn't sleep all that night because of it).
So there are different axes on that are needed to describe the law, at least two: live/dead (how applicable it is) and variable/constant (the ease of impossibility of changing the law). {There could also be a third axis for applicability: general/specialized. (i.e. how uniform the law treats people.)}
Perhaps the best way to think about the Constitution is as a legal contract between the federal government, the states, and the people. Like a contract, it can’t be arbitrarily modified by one or another of the parties, not legitimately. There are written into this “contract” methods of modifying it when such modification is agreed upon by the parties referred to in the methods. But “living?” In no relevant sense of the word.