I think that'll be possible. As long as you can persist all the state (which is easy if you are programming in a functional manner), then you will know exactly

I think that'll be possible. As long as you can persist all the state (which is easy if you are programming in a functional manner), then you will know exactly what sort of input caused a crash in your program. And when you have the data, you can write it in a manner that is later readable by the Lisp reaer.