Well, in that scenario I stand by my comment: if there is some technology that humans are in control of at all (as in, it literally performs in ways we are unab

Well, in that scenario I stand by my comment: if there is some technology that humans are in control of at all (as in, it literally performs in ways we are unable to predict), then that technology is harmful (because inability to predict significantly complicates things like survival). However, crucially, in no scenario it can make humans useless. That said, I do doubt it is likely. What is much more likely is that, more prosaically, humans can control it, but some humans misuse it and, intentionally or not, harm other humans; a story as old as civilisation itself.