Comment by landl0rd
No it's not. Constitutions are the bones of a republic. They are the framework that gives the government power and that checks that power. Letting it mess with that too much or too often is bad.
Constitutions should be simple. They should delegate very little power to governments and focus mostly on constraining those governments. They should be changed very rarely.
Adaptable government with changing scopes belongs at lower levels of governance (mostly very local) or nowhere.
France disagrees. They iterated 5 times on it and it fixed big flaws each time.
What keeps a country in check is not a constitution but a politically informed and active population. The US shows us right now that the constitution is just a piece of paper.