Stoke's law has nothing to do with sampling. Again, you would be well-served by learning some elementary mathematics.
If I pull two clubs in a row out of a deck of cards, the whole deck is clubs in my view, and no amount of math will convince me otherwise. As you would have me understand it, the size of the sample has nothing to do with it.
How does this example work out mathematically in comparison with the amount of earth exposed for scientific observation and analysis?