Johann only answers the first of his questions. So he's rich, most likely to an absurd degree. It does explain how he would be able to have the resources to perform unsanctioned brain surgery on a handful of people like this, though where those credits came from is left unknown.

Cast away all doubts for what he knows is possible? So he needs to think outside the box, in other words. Jack wants to try and connect the dots, but between the alarming sounds and that pressure, he's momentarily distracted from his interrogation.

Even though he can't see, Jack finds himself wincing his eyes closed against the pressure -- and clenching his jaw in anticipation of pain that might follow. His hands ball into fists and he lets out a long exhale.