In the podcast, hosts Dave and Brian discuss metaphysics and the concept of dimensions from both a philosophical and a physicist's perspective. They explore the idea of non-physical existence, questioning the nature of dimensions beyond the traditional spatial dimensions. They ponder topics such as time as the fourth dimension, the challenges of understanding non-physical aspects, and the role of imagination, faith, and trust in contemplating these complex ideas. The discussion emphasizes the importance of evidence and trust in belief systems while acknowledging the intriguing and incomprehensible nature of the world, as expressed in Einstein's quote.