Yes, it's amateurish speculation, but it does contain a useful point which you have missed. Perhaps pathological, clinical depression should be seen as the pat

Yes, it's amateurish speculation, but it does contain a useful point which you have missed. Perhaps pathological, clinical depression should be seen as the pathological manifestation of a valuable adaptation. Depression might be kind of like the immune system: a valuable mechanism that sometimes goes crazy and causes harm. By defining depression as "unproductive behaviors, and patterns of thought that go in circles," you reserve the term depression for pathological forms of depression, which might not be the best way of looking at it.