Hey Alex ! (Quite awesome to also read you on a complete other topic than music)
This technique of yours is reminding me of the surrealist and dada’s “free writing” method. I think we say “écriture automatique” in french. It comes from De l’intelligence, a book by H. Taine. It was also worked by André Breton, afterwards, if I’m not mistaking…
It’s a very funny exercice. And on a more serious note, a fantastic “revealer” of missed details.