Well, if ten average players sit down in a poker room in a casino, after the rake all ten could lose. Also, suppose ten poker players get checks at the beginning of the month and play lots of poker. First the below average four lose all their money. Now the competition is tougher and the average guys are below average in that little pool. If its a small town they might only play with each other, but even if its not, below average players either lose all their money or get frustrated, others continue playing, making it a tough row to hoe all over.
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