Why the best learners talk to themselves | Tania Lombrozo

In an era of instant access to information, relying solely on external sources often leads to cognitive overwhelm rather than deeper understanding. Cognitive scientist Tania Lombrozo advocates for "learning by thinking," a process that prioritizes internal knowledge synthesis over passive consumption. By adopting the "rubber ducking" technique—explaining concepts aloud to oneself—learners can confront the "illusion of explanatory depth," where the act of articulation reveals significant gaps in one's perceived knowledge. This self-humbling process transforms existing information by combining and re-representing it, which clarifies what specific new data is actually required. Rather than outsourcing cognition to AI or search engines, starting with internal reflection ensures that subsequent information gathering is targeted, efficient, and ultimately more effective for long-term retention and application.