I have no idea if you're correct about this or not. With 8 billion people in the world, and a significant number of those people working as "intelligent agents," how would you perceive the difference?
If you think the revolution starts with 8 billion people you're just plain wrong.
It starts with the first world and is very perceivable.
How did we perceive cars replacing horses? Well for one they were replaced in the first world... now imagine how fast a piece of software can change reality.
It's not there yet, and you can't perceive it because so.
When exactly did you perceive cars replacing the horse? I happen to live in a very equestrian area; I think you'd be hard pressed to convince folks that the horses have even been replaced