asaris

But infinity-infinity isn't necessarily 0. Take the natural numbers. Subtract all the even numbers. Still have an infinite set.

What Greg700 is saying is that, in the first case, for every marble x, as t goes to infinity, x will have been removed from the bag. But in the second case, this doesn't hold -- it only hold for those marbles such that x=10n. So there's an infinite number of marbles.

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"Die Deutschen meinen, daß die Kraft sich in Härte und Grausamkeit offenbaren müsse, sie unterwerfen sich dann gerne und mit Bewunderung:[...]. Daß es Kraft giebt in der Milde und Stille, das glauben sie nicht leicht."

"The Germans believe that power must reveal itself in hardness and cruelty and then submit themselves gladly and with admiration[...]. They do not believe readily that there is power in meekness and calm."

-- Friedrich Nietzsche