When Roley walks in the door, Liz’s strange response to him announcing his arrival at home (“are you?”), as well as her eerily conclusive statement, “there’s nothing that I want,” further emphasizes the degree to which her previous mental function has been impaired. Having circled the question throughout the story of exactly
what Liz lost in the accident, Roley concludes that it was her desire, through which Kennedy implies that it is our desires that makes us human. He presents her with a gift that is “worthless” and casually stolen, which seems less a genuine gesture of affection than a sort of charade, as if he is testing her. When she fails this test, holding the snowdome instead of shaking it, Roley’s cheerful mood collapses, as if he is finally confronting the full extent of his loss. Kennedy uses the snowdome—a cheap, mass-produced and breakable object—as a symbol for the brain, illustrating that Roley’s grief has led him to speculate that humans too are breakable, cheaply-made, and essentially “worthless”. The object is, in this sense, a representation of the manmade illusion of Oceanworld, as well as a reflection of the easily-disrupted illusion of human consciousness. The fact that Liz’s scars have given her an ironic expression seem to grimly emphasize this point, suggesting that perhaps the very idea of the “intelligent brain,” human or animal, is a myth. Behind every seemingly expressive face, even that of Samson, is just a useless machine-like brain floating in a bubble of fluid, waiting to be broken.