Euthyphros dilemma...

[Fidel_Castronaut]

So, "good" cannot be by consensus. Majority or not, certain things are just flat out wrong.

What if everyone on the planet either disagreed or was oblivious to the moral dilemma?

A rather simplistic question but I think it holds ground. It's fairly self-evident that morality, however defined, has changed through the times. The morality of 1000 years ago on any given topic is most probably different to what it is today (eg, homosexuality?).

I think we need to be careful before we jump to the conclusion that morality by consensus is automatically wrong. After all, the consensus on, say, murder might always have been that we as a species find it inherently objectionable, but that doesn't thus equate to 'god' (whatever that is), or some moral arbiter guiding us with an invisible hand. There are perfectly good evolutionary explanations as well, all of which have been cited on numerous occasions on this forum already and to which I am reluctant to open a debate on again.