If I'm annoying any of you guys with my random thoughts about SAO I'm sorry... When I watch a movie or anime, I tend to get stuck on some details more than others and I feel the need to find an explanation for them... so as I find an explanation I like to try to find other people to discuss them with >.> Like... I just suddenly thought "How does it get their voice data?" but then I realized "Wait when they start up the headset they say "Link Start!" so it could just take a clip from that and work it out. OH! and the biggest supporter for my theories I believe is the fact that none of their features change in game. Hair doesn't grow, nor do they cut it. none of the children have matured in two years either... yet when Kirito finally wakes up, his hair is down to his shoulders. So everything taken for the game would have been when they first put the headset on.