Tide said:
Dawg,
You are implicitly assuming morals are absolute. It is not valid to use your conclusion as a premise. However, you are supporting the notion that morals are indeed mutable.
I think what Dawg was getting at is that collectivism (which is, I think, what you're arguing for) is an appeal to popularity.
Numbers, words and sci-fi characters are just as real as morals. They all exist as concepts but none are physical.
That's true that morals are not physical, but that does not mean that they are in the same grouping as science fiction characters (same for numbers, and possibly words). With that logic then TVs exist, because they're physical. However, the physical laws that govern them and ultimately make TV possible don't exist, because they're not physical either. They're just human 'concepts'. But physical laws do exist. How we understand them is what's inside our mind. Something doesn't have to be physical to exist and be real.
Same with numbers, a number is a human concept, yes, but that concept is a representation of something very real. If I say "there are two rocks there, and two rocks there, so there's really four rocks in all" the amount of rocks won't change just because I decide to call "two" and "four" something else, or get brainwashed into thinking that 2+2 actually equals 5. There's still four rocks. That's very real, even if our concept of numbers is not physical.
You seem to be grouping human "inventions" such as sci fi character and human "discoveries" such as physical laws, numbers, and arguably morals together. Neither of them are necessarily physical, but our "discoveries" do exist outside of the human mind. Unless you're a solipsist, but let's not even go there.
So really, to say that morals are relative "because they're not physical" is like saying science laws are relative because they're not physical. Clearly that's not true, e=mc squared everywhere, not just in our culture. (I don't know how to do superscript)
I can't really think of any arguments for or against morals being "discoveries" or "inventions", but I think I'll bring it up with my philosophy club next semester.