The founders of the United States knew the Constitution wasn't perfect, and so they baked in a process for revising their original document. Today, the first few amendments are collectively known as the Bill of Rights -- but, as returning guest AJ Jacobs, author of "The Year of Living Constitutionally" reveals, there have been tons of other proposed amendments that didn't make the cut. Tune in to learn more in the second part of this special two-part episode.