This podcast episode is based around two sets of chits (two "chats") found on airchat at https://www.getairchat.com/bretthall/bretthall?t=440630 The articles associated with these chits and in the latter case many links are here:

https://www.bretthall.org/blog/the-white-swan-and-red-pen and here:

https://www.bretthall.org/blog/the-problem-with-fallibilism