You can use Lisp in professional settings. Lisp has been used successfully in teams from 2 to 100 people with source-code bases of upto 10 million lines. The us

You can use Lisp in professional settings. Lisp has been used successfully in teams from 2 to 100 people with source-code bases of upto 10 million lines. The usual things apply: a good team, a good development environment, tests, documentatiom, etc.