'You can think of neural networking like data encryption across brain transcription, okay, Sal? The more you netowrk or link with someone else neurally, the more 'in tune' you become. But there's a danger with this Sal - if you do it too often or too much, you become like them. That's nice if you wanna be someone's doppel, but - you don't. You wanna be you, you wanna stay you - it's why they picked you for The Program, anyway. They wanted people who can't be Programmed. Girls are known for neural plasticity - your brain even bends to your man's during pregnancy so you can grow his kid. So I need to know, Sal - I need to know how malleable your mind is. Because without you and my little guy - there's nothing left here.'
Johnny put down the NeuralSim helmet. Sally had finally gotten him out of that hospital bed, but doing so had put her in one. Now he needed to make sure he could pull her back, back to their time, their plans, without her drifting too far off course, neurally speaking.