I Shipped Fewer Bugs After I Started Writing Specs. Heres the Framework

I Shipped Fewer Bugs After I Started Writing Specs. Here's the Framework Last March, we had a billing incident that cost us three days. A rounding error in our invoice calculation was silently overcharging customers by fractions of a cent. Not enough for anyone to notice on a single invoice. But multiplied across thousands of transactions over two months, it added up. We had to issue refunds, write a post-mortem, and rebuild trust with a handful of enterprise customers who did the math. The fix