The Benefits of Forgetting

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In a recent interview with the BBC, Charan Ranganath, a renowned neuroscientist and professor of psychology at the University of California, Davis, discussed his new book “Why We Remember.” This book explores the complexities of memory and the surprising advantages of forgetting.

The book is praised for its accessible language and compelling storytelling, which blends scientific research with personal stories and examples from pop culture. “A well-informed tour of a mysterious and crucial part of the brain, promising greater self-awareness and mental clarity.”

Ranganath explains that memory is not just a static record of past events but a dynamic process that profoundly influences our present and future. He argues that memory helps us navigate daily tasks, solve problems, and make decisions. It also plays a crucial role in our ability to heal from trauma and learn from experiences. This perspective challenges the common view of memory as merely a storage system for information​ .

New Scientist

The BBC’s David Robson spoke with the author, to discuss a range of topics from the book, including the following:

Error-Driven Learning

Ranganath told David that forgetting is not soley a lapse in our cognitive function but a critical component of learning. The error-driven learning is a theory that our brains use errors to adapt and improve our understanding of the world. By forgetting outdated or incorrect information, our brains make space for new, more accurate memories, says Ranganathan. This process helps us to sharpen our knowledge and better navigate our ever-changing environment.

Age-Related Forgetfulness

As we get older, many of us become more forgetful. Ranganath says that this is a natural part of aging and not necessarily a sign of cognitive decline. Instead, it shows how our brain prioritizes, where less critical information is discarded in order to focus on what is most relevant to our current needs. This selective memory is important for keeping our cognitive efficiency throughout our lives, says Ranganathan.

Faulty Memory

The book also touches on the phenomenon of faulty memory. Ranganath points out that our memories are not perfect records of the past but are often reconstructed and reshaped over time. This ability to change allows us to adapt our memories to new experiences and information, which helps us learn and grow. By understanding that memories are dynamic, we can better appreciate how they shape our perceptions and decisions.

Collaborative Memory Process

During the interview, Ranganath discussed the concept of collaborative memory, focusing on how our social interactions influence what we remember. Engaging with others helps strengthens our memories and fill in gaps through shared experiences and perspectives. This collaborative process not only enhances individual memories but also facilitates a collective understanding within social groups.


Ranganath’s insights in “Why We Remember” challenge traditional notions of memory by showing its dynamic and adaptable nature. By understanding the benefits of forgetting, we can better appreciate how our brains prioritize and process information, which in turn helps us learn and make the decisions. Ragunathan’s interesting study shows how important memory is in our daily lives and presents a fresh perspective on how we can harness its power for personal growth and betterment.

You can read the full BBC article here or dive into Ranganath’s book for a more detailed exploration of these concepts.

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