AI will create perfect Sybil attacks. The reality dictates our need of a signal for humanness. To know an interaction is a real human and not an indistinguishable simulation of one. Picture if the internet was flooded with 100 trillion malign actors and trolls, each tireless, merciless, skilled at both social manipulation and cyber attacks, with no way to tell if they are real people or not. Even a live video call with them cannot be trusted, not even if they look and sound like someone you know.
We're not there yet, but how far out do you feel confidant in saying that will still be the case? Two years? Five?