re BLAS, we may hope, but it appears that BLAS and friends probably single-handedly kept FORTRAN from dying off. And I suspect both will live forever. As for

re BLAS, we may hope, but it appears that BLAS and friends probably single-handedly kept FORTRAN from dying off. And I suspect both will live forever. As for Emacs, it's probably just "good enough" underneath the covers to never draw a rewrite. More fun to spend time hacking elisp.