Well, I think that's a reasonable analogy, except that with spoken language evolution, the unintelligibility tends to be mutual, whereas with Fortran there's su

Well, I think that's a reasonable analogy, except that with spoken language evolution, the unintelligibility tends to be mutual, whereas with Fortran there's substantial compatibility in one direction (i.e., GFortran will happily compile anything from f77 to Fortran 2008)