Among the more conspicuous figures to witness Elton Brand's introductory press conference as Sixers general manager was a bald man in a crisp blue sports coat who floated through through the crowd like a ghost of NBA past. David Falk is not the super agent that he used to be, nor does he express a desire to return to those days. But of all the people who packed the second-floor lobby to witness Brand's first public appearance in his new role, only Falk could claim to have played a leading role in creating the economic landscape that the Sixers' new GM must now navigate.