Leonard Mlodinow - How To Harness Your Emotions To Become A Better Investor | #381

Episode Summary

Executive Summary: Physicist and author Leonard Mlodinow discusses his new book Emotional and argues that emotions are not the enemy of reason but a core tool of thinking, decision-making, and motivation. He explains how emotions shape attention, judgment, investing behavior, and social contagion, while also highlighting modern neuroscience and physics breakthroughs that continue to reshape how we understand the mind and the universe.

Main Topics: Emotions as a component of rational thought (Priority: 5/5): Mlodinow argues that emotions guide attention, memory, and valuation, meaning there is no truly 'pure' rational thinking separate from feeling; emotion helps the brain decide what matters and how to act. Emotional regulation and acceptance (Priority: 5/5): He emphasizes mindfulness, awareness, and regulation techniques, stressing that suppression is the least effective strategy and that acceptance of uncontrollable circumstances is often the healthiest response. Investing and trader psychology (Priority: 5/5): The conversation applies the book’s ideas to markets, discussing research on traders and how successful traders embrace emotions, use reappraisal, and avoid suppressing feelings. Social media and emotional contagion (Priority: 4/5): Mlodinow explains how social emotions evolved for small groups but now spread much more intensely through social media and modern media ecosystems, amplifying fear and other emotions. Neuroscience and the unconscious mind (Priority: 4/5): He describes the scientific revolution in psychology and neuroscience, including technologies that reveal how the unconscious mind and brain circuits shape behavior. Future frontiers in physics and brain science (Priority: 3/5): Mlodinow shares excitement about dark matter, dark energy, muon anomalies, optogenetics, connectomics, and brain stimulation technologies as areas likely to transform science.

Key Arguments: Emotions are not opposed to reason; they are part of the machinery of reasoning and decision-making. The brain filters data through emotional states, which determine what gets emphasized, ignored, or remembered. Suppression is a poor emotion-management strategy; awareness, acceptance, and reappraisal work better. Most emotions are productive for ordinary people because they create motivation, desire, and action. In investing, top traders tend to respect and work with emotions rather than deny them. Social media amplifies emotional contagion far beyond what humans evolved to handle. Understanding another person’s emotional state is essential when trying to persuade or predict their response. Modern neuroscience has moved from behavioral inference to measurable brain activity, transforming psychology into a more precise science. Physics and brain science are both entering periods of rapid discovery, with many open questions still unresolved.

Data Points: Trader study size: 100+ traders - Mlodinow cites a study of traders across four investment banks in Europe and the U.S. Number of banks in trader study: 4 - The emotional and performance study referenced by Mlodinow examined traders at four different investment banks. Time scale for emotion science shift: 10–20 years - He describes the last decade or two as a period when neuroscience and emotion research changed dramatically. Prisoner of war duration: 7 years - He references Stockdale surviving years of captivity through acceptance and discipline. Nomadic group size: 25–50 individuals - Used to explain the evolutionary origins of social emotions and emotional contagion. Physics discovery timeline example: Early 1960s to 5–6 years later - He notes that the Higgs project was conceived in the early 1960s and implemented later, illustrating slow-moving physics progress. Investor audience context: 351 ETF exchange - The sponsor segment describes a tax-deferral structure for moving legacy positions into ETFs.

Pivotal Quotes: "Emotion is not at war with rational thought, but rather a tool of it." — Meb Faber: Quoted while discussing the core thesis of Mlodinow’s book and how emotion supports reasoning. "The ones who were the most successful did the opposite. They embraced their emotion." — Leonard Mlodinow: Explaining the trader study and why emotionally aware traders performed better. "You can no more separate emotion from rational processing, then you can separate the CPU of a computer from its memory and its RAM and all the data that it's working on." — Leonard Mlodinow: Used to explain why emotion and cognition are inseparable in the human brain.

Implications: For listeners, the takeaway is to stop treating emotion as a flaw and instead use it as input. In investing, leadership, and relationships, awareness, acceptance, and reappraisal can improve decisions and resilience while reducing avoidable mistakes.