Why is the United States Constitution called a "living document"? (Site 1)

The Constitution of the United States is the foundation of our Federal Government. It is often called the supreme law of the land; no law may be passed that contradicts its principles. At the same time, it is flexible and allows for changes in the Government. The Constitution is known as a “living” document because it can be amended, although in over 200 years there have only been 27 amendments.

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social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract or agreement among them to form the society in which they liv