Comment by growthwtf

Me either. I have heard stories of it happening, but never personally seen one live. It's really a tooling issue. I think the causal story is super important and will only become more so in the future, but it would be basically impossible to implement and maintain longer-term with today's software.

Kind of like flow-based programming. I don't think there are any fundamental reason why it can't work, it just hasn't yet.