That feels like a pretty uncharitable interpretation of my original comment.

I was describing general strategy, that when applied in concert is more than the sum of its parts.

E.g I mentioned property-based testing, that is another angle at which a test avoids assertions that are too fine grained.

Yeah I just don’t consider adding more or better tests as a solution to fragile code, which is the topic of the conversation.

I think it has much more to do with overall architecture and design, and as for now, human oversight.