No, sadly there will always be accidents, but we must try to minimise them as much as possible. Not being able to see what the other pilot is doing with the controls is a major lack of important information, in my opinion. If that pilot is following SOPs all well and good, but if they do something totally odd and out of the blue and you can't see or detect that, then that is a problem.
But controls that move don't always help either. What about Asiana 214 that got slow on finals and crashed into SFO?
If you believe what the advocates say, thrust lever movement - or the lack of it - should apparently have been a big cue, but clearly wasn't.