The rhythm and rhyme helped aid the memories of those who passed along the stories, a process that also gave us the beautiful imagery in the Iliad, The Odyssey, Beowulf, theVedas, the Bible, The Epic of Gilgamesh, and many others.
Apart from various ways highlighted to build capacity and tools for the same, he also stressed upon going back to our Vedas which has been source of Science and Inventions of great scientists like Einstein.