The word is Notional.

Notional leads to Casey Jones and then folk heroes. There's a kind of collapse that makes folk heroes. The loss, or the beginning of the loss of village or the fully lost qualities of village. 

Notional. 

Notional also makes me think of notational. And so...

Notational. It makes me think about the history of calendars and writing. 

This episode goes on to touch on the origins of writing, the role of agriculture, why we need big numbers, and more. And the culture making connections are rich and ongoing.