Reminds of SmallTalk / and Lisp's - https://en.wikipedia.org/wiki/Common_Lisp_Interface_Manager https://en.wikipedia.org/wiki/Common_Lisp_Interface_Manager The

Reminds of SmallTalk / and Lisp's - https://en.wikipedia.org/wiki/Common_Lisp_Interface_Manager https://en.wikipedia.org/wiki/Common_Lisp_Interface_Manager There was even a story, that (at least for Common Lisp), you can start from almost blank state, but have an exception handler installed (that can continue), so as you go you live-edit and add pieces missing, or if code crashes change. This is all good, until nowadays, where you really want to know what's deployed in production, and not just the last stuff I've live fixed. I mean, I guess both have values tbh, but hard to pull two models like this and use... bit like - debugger or printf statements (or both!)