Lisp is popular? Where? It was almost mainstream in the 1980s when there were four Lisp Machine companies (Xerox, Symbolics, Texas Instruments, LMI) and symb

Lisp is popular? Where? It was almost mainstream in the 1980s when there were four Lisp Machine companies (Xerox, Symbolics, Texas Instruments, LMI) and symbolic AI, particularly expert systems, were used. Not so much now. I still use it. If you know it you can be much more expressive and productive in it than in other mainstream languages, and when there's something you need that's missing from Lisp, you can extend Lisp to include it. There are reasons it's fallen from favour, some of which lisper has given here. It's a mistake to languages necessarily succeed or fail on their merits.