George MacGill is back with a stellar follow up to his first Modern Wisdom appearance, discussing all things mental models.

Richard Shotton is an author, consultant, conference speaker, and trainer. His work focuses on applying findings from psychology and behavioral science to marketing.

Dr. Taylor Burrowes is a marriage and family therapist.

David Perell is the host of North Star Podcast.

George McGill, one of our favorite Twitter follows, joins Chris to chat about mental models, books, and how to improve your thinking.

David Sinclair, PhD is a Professor in the Department of Genetics at Harvard Medical School and co-Director of the Paul Glenn Centre for the Biological Mechanisms of Ageing.

Alexander Cortes is a personal trainer and health writer.