[FredZarguna]

Not only that. It is also required that the particles be completely indistinguishable. In other words, you get two of them close enough, and you actually have no way of knowing which is which.

In a quantum mechanical Three Card Monte Game, you cannot be cheated, because all three cards are the same, and all three cards occupy all three positions at the same time.

[zeestephen]

Fred,

Excellent answer.

I realize that the natural world obeys different laws than the atomic world.

However, given the proper tools, would man ever be able to construct, say, one ball bearing that was absolutely identical to a second ball bearing?