Developer Testing and the Importance of Context

How is it we keep falling for the same trick? Why is it so hard to remember: there is no silver bullet. I've spent a significant amount of my time for the past 3 years focusing on testing. I've learned several lessons.Setup methods are evilOne assertion or expectation per testDuplicate code in tests can be a good thingTest names aren't always requiredReplacing mocks with stubs can improve essence