#Gödel #EmilPost #VonNeumann #recursivity “I do not know if you have heard that "Post's problem", whether there are degrees of unsolvability among problems of the form (∃ y) φ(y,x), where φ is recursive, has been solved in the positive sense by a very young man by the name of Richard Friedberg. The solution is very elegant. Unfortunately, Friedberg does not intend to study mathematics, but rather medicine.” Gödel to Von Neumann

the #Fediverse slash #Mastodon is an example of what #StaffordBeer said about how a given system can be improved simply by adding #recursivity (in this case, separate instances) without significantly changing the system otherwise. the paradigm ultimately isn't that different from previously existing #SocialMedia except for the flexibility provided by an added level of recursivity. #cybernetics

#help
J'ai vu passer ici il y a quelques temps une vidéo d'une démonstration de la récursivité avec des briques, ou blocs, qui tombaient et se calaient (pas comme au débarquement) au retour. Ça parle à quelqu'un?

Retoots appréciés <3

#recursivité #recursivity