> Testing is inherently a probabilistic endeavor. That's a pretty powerful insight! I think that a lot of developers who are firmly in the test-driven camp do

> Testing is inherently a probabilistic endeavor. That's a pretty powerful insight! I think that a lot of developers who are firmly in the test-driven camp don't realize this, but instead think that if you have 100% test coverage, your code will work 100% of the time. Fixing bugs, to them, is "just" an inevitable result of increasing your test coverage, so that's what they focus on.