Simon Wolfe of Capsule Computers writes:
"What happens when the barrier between the real world and the digital or Wired world begins to blur and disappear? Is it a good thing as people are free to truly live how they wish in either world or a bad thing for pretty much the same reason? The idea behind Serial Experiments Lain is that this line is blurring in ways people aren't expecting as the show starts out with characters receiving emails from a classmate. Only problem is that the classmate is dead."