Jim Karol, author of \u201cUltimate Memory Magic,\u201d has developed the ultimate tool to help you remember huge lists and other large numbers of items. It\u2019s called the mental matrix, and it just might blow your mind. In the final episode of The Brain Warrior\u2019s Way Podcast series with Jim, he describes what the mental matrix is, and how you can use his (or your own!) to turn your brain into a well-oiled memory machine.