My personal answer rather is: One is working on a kind of software with additional safety or security requirements, where CI would be a really bad idea. This d

My personal answer rather is: One is working on a kind of software with additional safety or security requirements, where CI would be a really bad idea. This does not contradict to the idea that methods that are rather necessary for CI, such as really high test coverage (this is typically even a requirement for such a kind of software), automatic building (can improve productivity a lot) often also make sense in such an environment.