In a perfect world this is arbitrage. Arbitrage helps making markets more efficient. However we don't live in a perfect world. Judgment is too expensive and ris

In a perfect world this is arbitrage. Arbitrage helps making markets more efficient. However we don't live in a perfect world. Judgment is too expensive and risky. If it were quick, cheap and safe then patent trolls won't have the chance to do extortion. They would be limited to ... um... arbitrage!