The source is a podcast episode where the host discusses the concept of a fractal holographic universe as presented in Billy Carson’s book, "Fractal Holographic Universe: The Matrix Code Revealed". He draws parallels between this concept and other sources, such as the Netflix series "A Time to Infinity", the film "Interstellar", and the mathematical Mandelbrot set. He speculates that the Mandelbrot set may represent a model for the universe, with an internal region that repeats itself indefinitely and an external region that extends to infinity. This external region, he believes, could be the gateway to a different universe where duality does not exist. He encourages listeners to explore these ideas and to watch the documentary series "A Time to Infinity"