> I first learned about the "innovation tokens" idea in "Novelty is a loan you repay in outages, hiring, and cognitive overhead" from this, still one of my favorite essays on software architecture: https://boringtechnology.club/

I don't think this is consistently true - in particular, I think that a lot of current well-known practices around writing code result in code that implicitly relies on assumptions in another part of the system that can change without warning; and novelty is necessary in order to make those assumptions more solid and ultimately result in software that is less likely to break unexpectedly.

I don't follow. Following the robustness principle doesn't necessarily introduce novelty. Perhaps a bit more complexity, but just how much depends on how clever you try to be.

What did you mean?