Though that comment may be somewhat playful, the affirmation makes good biological sense if you consider that porn messes almost directly with one of our most basic instincts. And although you can argue that ads do the same, the thing is that on ads, if they’re regulated and suited to the broadest public consumption, the appeal to the basic instincts has to be much more subtle. That makes it is less direct and less capable than porn for driving the tech resources to its development. But the difference may not be as substantial as I imagine it to be.