A Human Psychology Premise

This is something I was discussing on-line in some high brow chat room. Yes, they do exist if you know where to look.

The discussion was about morality and whether a moral issue was black or white. My argument was that no issue could be purely black or white because of the human factor, in reality every issue was a shade of grey. It could perhaps look black or white but if you looked really closely there would be a hint of white or a hint of black.

There is a test for this premise:

"For a moral issue to be pure black or white every (sane) person on the planet must unanimously agree that it is so."

Now as no moral issue can pass this test moral issues can only be a shade of grey.

Now before anyone says what about this, just think would every single person in the world agree that it was 100% right or wrong.

I am not saying you cant get close I am just saying you will never be spot on. It is a hypothetical thought premise, nothing more nothing less. It really doesn't effect whether a moral issue is inherently good or inherently bad. All the premise really states is that you cant have unanimous verdict only a significant majority verdict.