Yes because the natural rights are protected in the Bill of Rights in the constitution. The government cannot impede on these rights such as freedom of speech, press, religion, petition, trial by jury, bear arms, etc
They knew that people were going to change, and that the Constitution had to change with them. In order to be a working document, it had to be changed to reflect what was going on. At the same time they wanted changes to be taken seriously so they made it difficult to change things.
