Which claim does the burden of proof land on? That an artificial super intelligence can easily be controlled or that it cannot? And what is your rational for deciding?
Like i said above you can argue that an AGI can be realized because there's plenty of us running around on earth but claims about a hypothetical super AGI are unfounded and akin to Russell's Teapot.
So I ask, are systems capable of better than human intelligence possible? And if so to what factor?
I would answer yes and unknown. If there are states of intelligent far greater than human then that gets really risky very fast.