Not only do I think (b) is more likely than (a), I think (b) is strictly true. I mean, our concentration is quite limited and there are optical illusions which

Not only do I think (b) is more likely than (a), I think (b) is strictly true. I mean, our concentration is quite limited and there are optical illusions which are, perhaps even more strongly than eps-adversarial examples for a given architecture, very general problems. So, given a "brain-simulated ML" thing (whatever that may mean, but let's assume it's the case), I suspect there may be a way of coming up with even more striking adversarial examples—but, considering that architectures vary heavily between humans, I suspect this would be quite person-specific. Anyways, my final point is in saying that such a claim doesn't seem too far-fetched in any way. That being said: I could be totally and hilariously wrong.