Good points. I remember hearing similar thoughts on systems built with Forth: They performed their job, even when other languages were incapable of producing such systems, and they often were built with a fraction of the time and resources required by other languages.
Fortran, C and Scheme: Sounds like an old system. Is it still running?
The conveyor belt controller sounds like an embedded project. Why Scheme?
The Veterans Administration's health system - one of the largest in the world - runs on Mumps, as does Epic Systems which powers a large percentage of the medical practice/hospital systems in the U.S. TD/Ameritrade runs some systems on M as do many banks. I have heard that ATM systems have used it in the past, though not sure if they still do.
Fortran, C and Scheme: Sounds like an old system. Is it still running?
The conveyor belt controller sounds like an embedded project. Why Scheme?
Thanks again.