Rufus connected the machine's terminals to Marcus's head any way he could. In order to get maximum contact with flesh, such as there now was, he'd thought to bring some sticky tape to secure the electrodes in place.
He'd fully charged the machine back at Marcus's house, so now he switched it on, to perform its monster download. And Marcus was that monster! All Rufus had to do was to sit, patiently, with the headphones on. He wasn't sure why he needed the headphones, but was driven by instinct.
Would it, could it work? Or was Marcus's brain truly empty?