God, I'd love to know how roach's brain is working so efficiently at neglecting any information that is not in compliance with his views and believes. It's astounding.
Just like with computers, it's possible to install anti-reality filters in people's brains so they only see what they want to see and anything else gets filtered out. Any time a conflicting thought comes in, it's blocked and redirected to porn or something.
The real fun comes when you start hacking with a person's microcode. Then you can change who they are.......