This podcast episode explores the concept of a "second brain," a personal system for knowledge management that helps us capture, remember, and benefit from the overwhelming amount of information around us. The podcast argues that our minds are reaching a biological breaking point in the age of information overload, and we need to embrace extended cognition to manage the burden on our brains. The episode provides practical tips on how to build a second brain, including using the CODE framework (Capture, Organize, Distill, Express) and the PARA framework (Projects, Areas, Resources, Archives).