How good can a fake/replica get

[Robwilliams]

I have been following all the posts lately about the fake/replica watches entering the country from China, especially frightening is the story about the replica DSSD that is almost fooling the experts. Anyway, my question is this, If/when the fake/replicas get soo good they fool everyone, including the experts, are the watches considered authentic? If they fool everyone, who is going to challenge them. The only people who would know are the ones making them. Don't get me wrong, I totally despise any fake/replica product, and the people that buy and sell them, no matter what it is, but I am very nervous about just how good can a fake/replica get?