[seanmcdirmid]

> Given how much memory, disk space, etc. we have these days it's getting to the point that we should really have the ability to dump a program's state and all actions from starting the program to finishing it and then fast forward/rewind the actions of the user.

Given a program from 20 years ago this is definitely possible. Given a program from today, it becomes an intractable problem quite quickly.

> It's just that no-one's done it yet and no programming language is really written to do it.

Live programming might get you what you want, but it won't be through brute force tracing of everything. Better to focus on deterministic replay then its quite easy to rebuild the contexts we need to fake it.