Tests don't find bugs. They find things a developer needs to investigate. Most tests I've seen aren't aids to diagnosability, so if there is a bug, the develop

Tests don't find bugs. They find things a developer needs to investigate. Most tests I've seen aren't aids to diagnosability, so if there is a bug, the developer is still needed to find it. > tests are written too early, using a data structure that gets changed in development I wouldn't call this "too early," but "testing the wrong thing" if they were testing internal particulars instead of behaviors.