Let me count the languages I’ve used/messed with:
FORTRAN
GOTRAN (on a university’s IBM 1620)
Dartmouth BASIC
1401 Autocoder
360/370 BAL
COBOL,
ALGOL,
PL/1
APL
C, C++
Javascript
Cold Fusion script
PL/SQL
T-SQL
Why so many? I’ve always had this archaic idea that if you couldn’t do it, you probably shouldn’t manage it. Of these languages, APL and PL/1, which were touted at the time as the be-all/end-all languages, were ones I glossed over as being too convoluted to use or spend time with. One language I never bothered with at all was MAD. I did spend a good amount of time with javascript and various SQL languages when jumping in to help the people I was managing.
As a manager if you’re deciding on what platform to use, always ask the question. If my entire development team died in a plane crash, which platform allows me to quickly find new developers at the lowest possible cost to the company.
What no LISP or Prolog ?
No Ada ?