Re: [THE CURRENT OPTIONS]
The failures I was referring to were just... not just Rezo. But even little things, attempts to soothe pain, attempts to find backdoors into damage done... who's to say they don't keep backups of everything in our minds...
But you're right, they can't be omnipotent when it comes to our current thoughts, or we'd be completely screwed ages ago. And if it's the private erasure of a private thought, that might not be a blip on their radar.