Sci-fi novel Tamir had just finished. Researcher Helena builds a chair that records memories, and a billionaire funds it. Combined with a deprivation tank that briefly kills the user and releases DMT, it creates new timelines. Detective Barry, who lost his daughter in a car accident, keeps rebuilding timelines as the world gets worse. Tamir takes from it the lesson that life can't be engineered to avoid pain.
Where it appears 2

how to upgrade your brain's OSSci-fi thriller about memory and time. Tamir reads a passage from it saying a memory is just neurons firing together, yet it's also the filter between us and reality, and that we experience everything as an edited, tape-delayed reconstruction about half a second late. The book inspired the episode and is the subject of his next long-form episode.