The Unknown Knowns

Intellectual Humility vs. Imposter Syndrome

In this episode of The Unknown Knowns, Dr Angela Lewis explores the difference between imposter syndrome and intellectual humility and why the distinction matters in intelligence, leadership and decision-making environments. Drawing on psychology research, intelligence tradecraft and personal experience, Angela examines why high performers often question themselves most and why uncertainty is not always a sign of weakness. The episode explores rigor, judgment and the challenge of making decisions without perfect information. Join the Sibylline Media mailing list https://mailchi.mp/sibylline.co.uk/sibyllinemedia [https://mailchi.mp/sibylline.co.uk/sibyllinemedia] If you enjoyed this episode, let us know by liking, subscribing or leaving a review You can also contact us with any questions or feedback at info@sibylline.co.uk Follow us on Instagram https://www.instagram.com/sibyllineltd/?hl=en [https://www.instagram.com/sibyllineltd/?hl=en] Follow us on LinkedIn https://www.linkedin.com/company/sibylline-ltd/ [https://www.linkedin.com/company/sibylline-ltd/] Follow us on YouTube https://www.youtube.com/@sibyllineTV [https://www.youtube.com/@sibyllineTV] For more information, visit our website www.sibylline.co.uk [http://www.sibylline.co.uk] #Leadership #DecisionMaking #CriticalThinking #IntelligenceAnalysis #ProfessionalDevelopment

The Mint Strategy: Staying Resilient When Your Brain Wants to Tap Out

In this episode of The Unknown Knowns, Dr Angela Lewis explores what happens to judgment and decision-making under sustained pressure and how resilience can be built before cognitive overload takes hold. Using the “mint strategy” as a framework, Angela examines how small interventions can interrupt stress spirals and improve analytical thinking in high-pressure environments. The episode explores cognitive resilience, premature closure, team dynamics and the systems that help people think more clearly when the stakes are high. This is a practical discussion about stress, judgment and the importance of building structures that support better thinking before pressure starts to narrow it. Join the Sibylline Media mailing list https://mailchi.mp/sibylline.co.uk/sibyllinemedia [https://mailchi.mp/sibylline.co.uk/sibyllinemedia] If you enjoyed this episode, let us know by liking, subscribing or leaving a review You can also contact us with any questions or feedback at info@sibylline.co.uk Follow us on Instagram https://www.instagram.com/sibyllineltd/?hl=en [https://www.instagram.com/sibyllineltd/?hl=en] Follow us on LinkedIn https://www.linkedin.com/company/sibylline-ltd/ [https://www.linkedin.com/company/sibylline-ltd/] Follow us on YouTube https://www.youtube.com/@sibyllineTV [https://www.youtube.com/@sibyllineTV] For more information, visit our website www.sibylline.co.uk [http://www.sibylline.co.uk] #Leadership #DecisionMaking #CriticalThinking #Resilience #IntelligenceAnalysis

The Sound of Silence

In this episode of The Unknown Knowns, Dr Angela Lewis explores the role silence plays in leadership, analysis and decision-making. From uncomfortable meetings to high-pressure intelligence environments, Angela examines why silence is often misunderstood and how it can reveal uncertainty and hidden assumptions. The episode explores when silence creates space for better thinking and when it becomes avoidance that damages teams and decision-making. This is a short reflection on communication, judgment and the signals people miss when nobody speaks. Join the Sibylline Media mailing list https://mailchi.mp/sibylline.co.uk/sibyllinemedia [https://mailchi.mp/sibylline.co.uk/sibyllinemedia] If you enjoyed this episode, let us know by liking, subscribing, or leaving a review You can also contact us with any questions or feedback at info@sibylline.co.uk Follow us on Instagram https://www.instagram.com/sibyllineltd/?hl=en [https://www.instagram.com/sibyllineltd/?hl=en] Follow us on LinkedIn https://www.linkedin.com/company/sibylline-ltd/ [https://www.linkedin.com/company/sibylline-ltd/] Follow us on YouTube https://www.youtube.com/@sibyllineTV [https://www.youtube.com/@sibyllineTV] For more information, visit our website www.sibylline.co.uk [http://www.sibylline.co.uk] #Leadership #DecisionMaking #CriticalThinking #Communication #IntelligenceAnalysis

The Politics of Dissent

In this episode of The Unknown Knowns, Dr Angela Lewis explores one of the most difficult challenges facing intelligence professionals and leaders: how to tell uncomfortable truths inside systems that may not want to hear them. Using the relationship between Elphaba and Glinda in Wicked as a framework, Angela examines two very different approaches to dissent: speaking truth from outside the system and influencing change from within it. She explores why both roles matter and why knowing when to challenge power directly versus when to work strategically inside existing structures is a critical professional skill. Join the Sibylline Media mailing list https://mailchi.mp/sibylline.co.uk/sibyllinemedia [https://mailchi.mp/sibylline.co.uk/sibyllinemedia] If you enjoyed this episode, let us know by liking, subscribing, or leaving a review. You can also contact us with any questions or feedback at info@sibylline.co.uk Follow us on Instagram: https://www.instagram.com/sibyllineltd/?hl=en [https://www.instagram.com/sibyllineltd/?hl=en] Follow us on LinkedIn: https://www.linkedin.com/company/sibylline-ltd/ [https://www.linkedin.com/company/sibylline-ltd/] Follow us on YouTube: https://www.youtube.com/@sibyllineTV [https://www.youtube.com/@sibyllineTV] For more information, visit our website: www.sibylline.co.uk [http://www.sibylline.co.uk] #Leadership #DecisionMaking #OrganisationalCulture #RiskManagement

The Value of Training

In this episode of The Unknown Knowns, Dr Angela Lewis is joined by Sibylline’s Associate Director of Product Operations, Jack Nott-Bower, to explore why professional development is often overlooked in intelligence teams and why that creates long-term risks. They examine the difficult transition from analyst to leader, why many high performers become bottlenecks after promotion and how training can help leaders build stronger teams rather than carrying the workload themselves. The discussion also explores how AI is reshaping analytical workflows, why judgment remains irreplaceable and how organisations can develop leaders who scale capability across entire teams. The episode also highlights Sibylline’s upcoming in-person training event in San Francisco on 12 May, focused on leadership, judgment, language and authority in the age of AI. Learn more about this in-person workshop here: https://sibylline.co.uk/leadership-for-intel-professionals-new-managers-judgment-language-and-authority-in-the-age-of-ai/ [https://sibylline.co.uk/leadership-for-intel-professionals-new-managers-judgment-language-and-authority-in-the-age-of-ai/?utm_source=Sibylline+Marketing+&utm_campaign=37c35d521d-EMAIL_CAMPAIGN_2025_10_08_12_46_COPY_01&utm_medium=email&utm_term=0_-16b2c61312-524908287&mc_cid=37c35d521d&mc_eid=8f124bfadb] Join the Sibylline Media mailing list https://mailchi.mp/sibylline.co.uk/sibyllinemedia [https://mailchi.mp/sibylline.co.uk/sibyllinemedia] If you enjoyed this episode, let us know by liking, subscribing, or leaving a review. You can also contact us with any questions or feedback at info@sibylline.co.uk Follow us on Instagram: https://www.instagram.com/sibyllineltd/?hl=en [https://www.instagram.com/sibyllineltd/?hl=en] Follow us on LinkedIn: https://www.linkedin.com/company/sibylline-ltd/ [https://www.linkedin.com/company/sibylline-ltd/] Follow us on YouTube: https://www.youtube.com/@sibyllineTV [https://www.youtube.com/@sibyllineTV] For more information, visit our website: www.sibylline.co.uk [http://www.sibylline.co.uk] #Leadership #ProfessionalDevelopment #IntelligenceAnalysis #AI #DecisionMaking #FutureOfWork