I found the culture in forth very interesting - optimizing the code density (threaded interpretation) - the dynamicism was said to allow for numerical

I found the culture in forth very interesting - optimizing the code density (threaded interpretation) - the dynamicism was said to allow for numerical optimization not possible in math libs / fortran long ago (see J.V.Noble papers, I'm not knowledgeable enough to confirm his claims but i assume they hold some ground) - the bare-metal repl feel is also special, as freeing as poking basic on old hardware but with the freedom of lisp in a way forth sits in the thinking-altering languages land firmly imho