In this episode, Martin interviews Dr. Adam Zeman, a researcher who has studied aphantasia for the past 10 years. They discuss the concept of aphantasia, which is the inability to visualize mental images, and its implications for individuals' experiences and creativity. Dr. Zeman shares that aphantasia is not a disability but rather a variation in human experience. They also explore the challenges of understanding and describing different subjective experiences, as well as the potential subtypes and genetic factors associated with aphantasia. Dr. Zeman provides resources for further exploration of the topic.