If you work in a 'number crunching' domain it's worth learning enough Fortran to be able to read it. You'll at some point probably have to look at some Fortran

If you work in a 'number crunching' domain it's worth learning enough Fortran to be able to read it. You'll at some point probably have to look at some Fortran code and try understand how it works (or doesn't work). However the chances that you'll be called upon to write new Fortran is tiny.