Social Contracts

[Exian]

It seems damn near impossible for theists (I might as well narrow it down to Christians, since they are who I have the most experience with, even on AF) to imagine a moral code without god. As if, even if they understand the concept, it's too flimsy for them to except morality as "merely" a social agreement. So, I wondered if there was a good tangible example of a vulnerable social contract that works everyday even though it seems it shouldn't. I came up with money. I'm sure there are other examples, but this is something they can see and feel. What say you? Would money be a good argument for those who say morality is objective, and that a moral code built around the agreement of the community would never work?

I think the parallels work swimmingly. Currency is different, not only for every country you visit, but it changes with time within a given area; same as morality, except money is tangible.

Even better, they couldn't claim money as an "objective truth" invented by god. Also, I know I couldn't have been the first to draw this comparison, if its any good.

So go ahead and tear this apart for me and/or provide a better example, as I'm sure there are more.