there are lots of ways that the producers of lost can make actors and actresses look a lot younger. first, they can put a ditch in the floor so the charector looks shorter. also, they can use a lot of makeup to make them look younger. finally, they can use a voicechanger to make their voice a higher pitch. because of these things, there is no reason why the producers wont bring walt back to the show for the final episodes. comment now or talk to me on my talk page!!!