So is it a component of the "correct" ethical preferences that they satisfy the preferences of others? It seems this way since you use this to hold "our" ethics about murder over those of the mirror world (In actuality there'd be vast swaths of peaceful coexistence in the mirror world, e.g. in Ruanda).
But hold on, our ethical preferences aren't designed to maximize other sapients' preferences. Wouldn't it be more ethical still to not want anything for yourself, or to be happy to just stare at the sea floor, and orient those around you to look at the sea floor as well? Seems like those algae win, after all! God's chosen seaweed!
What about when a quadrillion bloodthirsty but intelligent killer-algae (someone sent them a Bible, turned them violent) invaded us, wouldn't it be more ethical for us to roll over, since that satisfies total preferences more effectively?
I see the asymmetry. But I don't see the connection to "there is a correct morality for all sentients". On the contrary, a more aggressive civilization might even out-colonize the peaceniks, and so overall satisfy the preferences of even more slaves, I mean, esteemed citizens.
But hold on, our ethical preferences aren't designed to maximize other sapients' preferences. Wouldn't it be more ethical still to not want anything for yourself
Not necessarily. Ethics uncontentiously includes fairness. Treating an arbitrary person's preferences as being unimportant would be unfair, so treating your own preferences as unimportant would be unfair.
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A list of some posts that are pretty awesome
I recommend the major sequences to everybody, but I realize how daunting they look at first. So for purposes of immediate gratification, the following posts are particularly interesting/illuminating/provocative and don't require any previous reading:
More suggestions are welcome! Or just check out the top-rated posts from the history of Less Wrong. Most posts at +50 or more are well worth your time.
Welcome to Less Wrong, and we look forward to hearing from you throughout the site!
Note from orthonormal: MBlume and other contributors wrote the original version of this welcome post, and I've edited it a fair bit. If there's anything I should add or update on this post (especially broken links), please send me a private message—I may not notice a comment on the post. Finally, once this gets past 500 comments, anyone is welcome to copy and edit this intro to start the next welcome thread.