Evolution is going to give you a good sense of how the world is. Figuring out how the world should be -that is, morality- is a different matter, to be informed by (but probably not based on) what you know of evolution. That’s a little like trying to make a cake using your knowledge of physics.
If you want to Sequences’ answer to this question, I’d go with this post: http://lesswrong.com/lw/sm/the_meaning_of_right/ . There’s also a wealth of other writing on the subject from any number of authors—don’t feel compelled to limit yourself to any single author in your efforts to tackle this (or any) question. And consider the possibility that this may be a hard problem to which you may lack a perfect answer at the moment, and content yourself with incinerating terrible non-answers. You do not need to have the full answer to point out that someone else is wrong.
Evolution is going to give you a good sense of how the world is. Figuring out how the world should be -that is, morality- is a different matter, to be informed by (but probably not based on) what you know of evolution. That’s a little like trying to make a cake using your knowledge of physics.
If you want to Sequences’ answer to this question, I’d go with this post: http://lesswrong.com/lw/sm/the_meaning_of_right/ . There’s also a wealth of other writing on the subject from any number of authors—don’t feel compelled to limit yourself to any single author in your efforts to tackle this (or any) question. And consider the possibility that this may be a hard problem to which you may lack a perfect answer at the moment, and content yourself with incinerating terrible non-answers. You do not need to have the full answer to point out that someone else is wrong.