normblog: Doing the right thing somewhere
[The “why limited military involvement”] question is so common is the result of a tendency to conflate the reasonable demand for a proper degree of consistency and impartiality in the application of moral principles with the not at all reasonable demand for people to display an impossible amount of energy, time, command over resources and so on, by generalizing their actions for the good so as to benefit all parties who might be thought appropriate objects of them. This tendency is wrong-headed, requiring as it does superhuman levels of capability from those of whom the generalizing actions are demanded. It’s as common as it is, not because of any real belief in such impossible levels of capability, but because it’s a quick method of trying to embarrass people you disagree with. But it’s also a useless one.Emphasis mine.