The Nazi's and Ayn Rands Egoism were in the last 300 years, so no.
That said, it is now harder to ignore people in far off lands, and easier to help them.
Utilitarianism is popular on LW because, AFAICT, its mathy.
You haven't explained why you reciprocal ethics should count as ethics at all.
Of 4: Is there a definition of what counts as ethics? I suppose being universal is part of the definition and then it is defined out. Fine. But the problem is, if Alice or Bob comes and says "Since I am only interested in this sort of thing by definition I am unethical", this is also not accurate, because it does not really predict what they are. They are not necessarily Randian egotists, they may be the super good people who are very reliable friends and volunteer at local soup kitchens and invest into activism to make their city better and so on, they just change the subject if someone talks about the starvation in Haiti. That is not what "unethical" predicts.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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