Sean Parker, founding president of Facebook, denounces it

Sean Parker, famously portrayed as the Machiavellian mastermind behind Facebook creator Mark Zuckerberg, says that he's now appalled by the company's exploitative abuse of human psychology: "God only knows what it's doing to our children's brains."

"The thought process that went into building these applications, Facebook being the first of them, ... was all about: 'How do we consume as much of your time and conscious attention as possible?'"

"And that means that we need to sort of give you a little dopamine hit every once in a while, because someone liked or commented on a photo or a post or whatever. And that's going to get you to contribute more content, and that's going to get you ... more likes and comments."

"It's a social-validation feedback loop ... exactly the kind of thing that a hacker like myself would come up with, because you're exploiting a vulnerability in human psychology."

"The inventors, creators - it's me, it's Mark [Zuckerberg], it's Kevin Systrom on Instagram, it's all of these people - understood this consciously. And we did it anyway."