Arya is having her first lesson with Syrio Forel. They use wooden sparring swords and at first you hear the sound of the wooden sword strikes, but then Ned shows up at the top of the stairs to watch Aria and Syrio. The sound design changes significantly. I no longer hear wooden sword strikes but steel, as Syrio mimes his strikes against Arya and exclaims, "dead" each time she opens herself to his death-blow counter. Is this just an oversight in sound design with a decision to abandon wood for more dramatic metal sounds. Or as the camera shows Ned's face is it supposed to foreshadow real swordplay and indulge in Ned's fears about his daughter soon fighting with real swords?