>> First of all, what makes a thing a good thing? A good thing fulfils its unique function. > Like a nuclear weapon? If the device in question sets off uncont

>> First of all, what makes a thing a good thing? A good thing fulfils its unique function. > Like a nuclear weapon? If the device in question sets off uncontrolled nuclear chain reaction, then yes, it is good for its purpose as a nuclear weapon. You are asking/implying: is the nuclear weapon's purpose good (in the first place)? Something can be good for its purpose (e.g., electric chair [0]), but the good/badness of that purpose is a separate question. [0] https://en.wikipedia.org/wiki/Electric_chair https://en.wikipedia.org/wiki/Electric_chair