The longevity and effectiveness of the US constitution as well as the fact that it's the shortest in the world is a testament to it's conciseness and how well made it was. Although I do agree with your main point, take France for instance, they've had 5 republics and even more constitutions since their revolution. Also, according to the 2nd amendment, I am entitled to have anything the military has...assault rifles, tanks, drones, nukes...you name it. Obviously there's a little problem with that in the 21st century.