> And I have seen many real problems solved with Lisp, regardless, that is why commercial Lisps like LispWorks and Allegro are still in business

Can you think of some domains where Common Lisp is a better choice than other languages? I have enjoyed Clojure for a lot of things, but I have not really found the features of SBCL useful for the kind of work I do.

For instance, restarts without unwinding the stack are cool, but for a server that's going to be running in production, it's not something I really leverage. I could use conditions to change the context of code called downstream, but I just haven't had a reason to do this yet.