I've been a Fortran user for (gawd help me) 35 years or so. I can say that rumors of its demise are greatly exaggerated.<p>There are many languages, and language fads. Fortran was never sexy, never faddy.<p>My research codes from 30+ years ago still compile w/o issue to this day, and run, on my linux laptop. Even using the big endian data files (gfortran has a nice switch for that).<p>I don't really use it actively anymore. But I know many who do. And when I hear others say "X for scientific computing", I've got to chuckle a bit. C++ code I wrote 15 years ago won't compile today. Python ... the language changes within minor versions (ran into this at work last week, with 3.6.8 being sufficiently different than 3.9.x that I had to rewrite a number of functions for 3.9.x).<p>I've not had to change my Fortran. Or my 25+ year old Perl. They just work. Which is something of a base requirement for scientific code. If you hand someone a code base, and N months/years later, it doesn't work ... that helps no one.