It's not just that, or I don't think that is even the primary reason for tools.x. Spec and tools are being developed to lay a foundation, so one can talk about

It's not just that, or I don't think that is even the primary reason for tools.x. Spec and tools are being developed to lay a foundation, so one can talk about and build upon the ideas of granular, function level dependencies, change (breakage vs. accretion) and so on. Ultimately this is about how code changes over time.