The godfather of the modern passing game is 73 years old and 11 years removed from the sideline. He spent last weekend watching one of his quarterbacks, Steve Young, join him in the Pro Football Hall of Fame. It would be easy to assume that Bill Walsh's passing acumen is of another era. But from his office at the Arrillaga Sports Center at Stanford University, Walsh misses nothing. He understands and appreciates how the passing offense has changed.