Right. Human exceptionalism is another issue - I personally find it is quite hard to justify in a secular perspective though. Because drawing an arbitrary conclusion on what beings worth more can easily backfire. i.e. what if the black people think the white people worthless 100 years after? Would it be justified if they ascent to a dominance position in the world?

Btw, I checked out your blog. Interesting! I like your perspective of taking a computational scientist's perspective on "optimizing" moral problems. I am a utilitarian and I think there's quite a lot of common grounds between our moral view - I think our advancement in​​ computer science does definitely​ give us a new tool for​ evaluating utility​. Look forward to more of your posts.