You've reminded me I always had it in my mind to learn Lisp, I've spent 25+ years in C and Assembly land.
Recuperation time down to not being able to breathe properly, collapsed lung, pneumonia, etc.
Thanks for all the replies so far, very interesting. Just to add, I'm just wondering what others on HN would do, I've no idea yet what to do, but from Monday I'll need to do something , or I'll go mad :)