Marcia Narine Weldon is a lawyer, law professor, and the founder and CEO of Illuminating Wisdom and Legally Lucid. She also co-leads legal training for one of the frontier AI models, which makes her the rare guest who can describe what happens inside model training rather than guessing at it from the outside. She joins Núria and Morgan to talk about what AI is doing to the legal profession, and what that preview means for medicine, medical writing, and every other knowledge field. The conversation starts with the pipeline problem. AI removes the entry-level grunt work that is how junior professionals build judgment, and every profession that runs on apprenticeship now has to answer the same question: how do you train the people who will supervise the AI if the AI did the work that used to train them? From there Marcia walks through what her training work actually looks like: prompts a real person would ask, golden answers, and rubrics that penalize the model for confident wrong answers, because a model is probabilistic and wants to please you. Her practical advice is concrete. Ask the model for verifiable hyperlinks from primary sources, ask for its confidence level, instruct it to say “I don’t know,” and check more than one model, treating disagreement between them as signal. And her warning is just as concrete: an answer that is 95% right looks trustworthy, and the missing 5% is where the damage lives, whether that is a diagnosis, a contract, or a business plan. She also covers the legal exposure most professionals have not thought about, from AI notetakers and consent laws to terms of service that can put you on the hook for the model company’s legal fees, to what the Copyright Office wants to know about human involvement before it protects your work. Marcia will be speaking at the AI Fluent Professional Summit in November on the legal pitfalls of using AI in your business and professional life. In this episode - How a compliance and governance lawyer ended up training a frontier AI model - Knowledge work as a commodity, and choosing to shape the change instead of watching it - The pipeline problem: fewer people at the bottom, more judgment required in the middle and at the top - Prompts, golden answers, and rubrics: what training a model actually involves - Why hallucinations happen, and the instruction set that reduces them - Running the same question through several models and reading their disagreement as signal - Consent, wiretapping exposure, and AI notetakers - Terms of service, data training defaults, and indemnification clauses hiding in your AI subscription - Copyright, trademark, and trade secrets when AI helped make the thing - Why “95% accurate” is a dangerous number in law and in medicine - Second set of eyes, not a replacement: how doctors and lawyers are actually using AI - Oral exams, AI-assisted students, and being able to explain your own answer Don't miss Marcia speaking at the AI Fluent Professional Summit in November. Join the summit: https://nuria-negrao.thrivecart.com/ai-fluent-professional-summit/?ref=marcia-narine-weldon LINKS: LinkedIn: https://www.linkedin.com/in/marcianarine/ Illuminating Wisdom: https://www.illuminatingwisdom.com/ Instagram: https://www.instagram.com/illuminatingwisdom/ Hosted by Nuria Negrão (nurianegrao.com) and Morgan Leafe (morganleafemd.com). Sign up for Nuria's newsletter: https://nurianegrao.kit.com/signup