Fortran is used all over for high performance computing, not just in government contracting. Scheme is not only used for language research. A large part of Julia, a pragmatic language for technical computing, is written in Scheme.
> A large part of Julia, a pragmatic language for technical computing, is written in Scheme.
No, not really. The parser is written in FemtoLisp (a Scheme dialect), but that's it. It's not actually doing anything other than the parsing, and there's actually work being done to replace that with a pure julia parser.
That's from 2012 when the language was in version 0.1. We're now in version 1.4 (1.5 launching soon!). At this point, 3.1% of the julia git repo is femptlisp (scheme), but I can assure you that is not being used for any heavy lifting or scientific computations. It's for the parser.
