A federal appellate court in Philadelphia was expected to begin considering arguments by CBS today (Tuesday) challenging the FCC's $550,000 fine for violating the commission's decency rules when it aired the Janet Jackson "wardrobe malfunction" during the 2004 Super Bowl halftime show. In its submission to the court, CBS argued that it did not know such an incident would take place in advance and that it would not have approved it if it had known. "As a matter of simple logic, something cannot be 'designed' without advance knowledge," the network said. However, in meting out the fine, the FCC said that the fact that the network had "promoted the halftime show before it aired as one that would be shocking gives credence to their culpability."