Just to be clear... I know what you're building and totally rooting for you!
Just meant that the dream, or more precisely my dream, of LightTable is delayed/put aside by this new project.
The curse of Lisp, to me, is being pulled into ever deeper more beautiful solutions, which you're definitely flirting with, but it's also just an allegory so I really hope you pull it off!
We started to hit roadblocks with our current paradigms and we happened to get lucky enough to stumble on some ideas that could move us forward. What we're working on now is the foundation necessary to do things we've always wanted to do (and awesomely, far more).
We'll be announcing some cool stuff soon, but the gist is that we have to look at the whole stack to find something better. So that's what we're doing.