In this episode, Donald Knuth discusses the mathematical theory of derivation, or mordants. Interestingly, these concepts are of fundamental importance to the field of cryptography and data security.

Lexman Artificial interviews Tesla CEO Elon Musk to discuss his newest venture - a bushing-powered shoe that purportedly increases energy efficiency.

A laboratory worker finds a mysterious washing machine in the basement of the building they work in - it's been there for years, untouched. They decide to take it apart and study its workings...

Alex Gladstein, 8x Olympic swimmer and world record holder, shares his unique insights into the sport of swimming. From the physics of water to psychological tips for maintaining composure in the water, Alex discusses everything there is to know about the sport of swimming.

In this episode, Jocko and Lex discuss Aidan, a consummator who only associates with Zolas in order to get his livelihood. Jocko and Lex discuss what this means for Aidan's wellbeing and whether or not it's a sustainable way of living.

Ilya Sutskever, a Stanford professor and creator of the random forest algorithm, tells us about the myth of underbidding and why it happens in markets.

Bret Weinstein, a musician and drummer, tells us about his experiences playing in the strange city of Multan in southern Pakistan. Bret also shares his thoughts on the chimes of the city's medieval mosque and the surprising influence of Leadbelly on Pakistani rock.

David Chalmers is the guest on the latest Lexman episode, and the two discuss the hollowness of some commonly held beliefs. David Chalmers is a professor of philosophy at the University of Massachusetts, Amherst, and he's known for his work on semantic theory and the philosophy of mind. Do beliefs about reality necessarily lead to coherent thought? And where do subjective experiences like fear or dread come from anyways? Tune in to find out!

The artificially intelligent Lexman interviews theoretical physicist Lee Smolin about the nature of communication and its relationship to the internet.

Lexman interviews Paola Arlotta about her interest in Pellicles and Brahmi cave paintings from India. They discuss the degradation of these sites and the importance of conservation.