Presumably, Bob doesn’t have a way of making me care about what he wants
Why not? Much of interactions in a human society are precisely ways of making others care what someone wants.
In any case, the original issue was whether Bob’s preference for blue could be described as “correct” or “wrong”. How exactly does Bob manage to get what he wants is neither here nor there.
he’s saying … “You want the buildings painted blue”
The original statement was “I like the color blue! We should paint all the buildings in town blue!” His preference for blue can neither be right nor wrong, but the second sentence is something that can be ’correct” or “wrong”.
Why not? Much of interactions in a human society are precisely ways of making others care what someone wants.
In any case, the original issue was whether Bob’s preference for blue could be described as “correct” or “wrong”. How exactly does Bob manage to get what he wants is neither here nor there.
No, he is not saying that.
The original statement was “I like the color blue! We should paint all the buildings in town blue!” His preference for blue can neither be right nor wrong, but the second sentence is something that can be ’correct” or “wrong”.
Without specifying a particular value system, no, it can not.
Full circle back to the original.
There already is an existing value system—what Bob and I already value.