Let's dumb it down: you have 20 apples. I steal 10. I then come back and trade the 10 apples I stole for your remaining 10 apples...how many did I steal?
Let's dumb it down: you have 20 apples. I steal 10. I then come back and trade the 10 apples I stole for your remaining 10 apples...how many did I steal?
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